Bump the gatsby group with 20 updates

Bumps the gatsby group with 20 updates:

| Package | From | To |
| --- | --- | --- |
| [gatsby](https://github.com/gatsbyjs/gatsby) | `5.14.1` | `5.15.0` |
| [gatsby-core-utils](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-core-utils) | `4.14.0` | `4.15.0` |
| [gatsby-plugin-catch-links](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-catch-links) | `5.14.0` | `5.15.0` |
| [gatsby-plugin-feed](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-feed) | `5.14.0` | `5.15.0` |
| [gatsby-plugin-image](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-image) | `3.14.0` | `3.15.0` |
| [gatsby-plugin-layout](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-layout) | `4.14.0` | `4.15.0` |
| [gatsby-plugin-manifest](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-manifest) | `5.14.0` | `5.15.0` |
| [gatsby-plugin-offline](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-offline) | `6.14.0` | `6.15.0` |
| [gatsby-plugin-react-helmet](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-react-helmet) | `6.14.0` | `6.15.0` |
| [gatsby-plugin-sharp](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-sharp) | `5.14.0` | `5.15.0` |
| [gatsby-plugin-sitemap](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-sitemap) | `6.14.0` | `6.15.0` |
| [gatsby-plugin-styled-jsx](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-styled-jsx) | `6.14.0` | `6.15.0` |
| [gatsby-remark-copy-linked-files](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-remark-copy-linked-files) | `6.14.0` | `6.15.0` |
| [gatsby-remark-images](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-remark-images) | `7.14.0` | `7.15.0` |
| [gatsby-remark-prismjs](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-remark-prismjs) | `7.14.0` | `7.15.0` |
| [gatsby-remark-responsive-iframe](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-remark-responsive-iframe) | `6.14.0` | `6.15.0` |
| [gatsby-remark-smartypants](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-remark-smartypants) | `6.14.0` | `6.15.0` |
| [gatsby-source-filesystem](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-source-filesystem) | `5.14.0` | `5.15.0` |
| [gatsby-transformer-remark](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-transformer-remark) | `6.14.0` | `6.15.0` |
| [gatsby-transformer-sharp](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-transformer-sharp) | `5.14.0` | `5.15.0` |


Updates `gatsby` from 5.14.1 to 5.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/compare/gatsby@5.14.1...gatsby@5.15.0)

Updates `gatsby-core-utils` from 4.14.0 to 4.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-core-utils/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-core-utils@4.15.0/packages/gatsby-core-utils)

Updates `gatsby-plugin-catch-links` from 5.14.0 to 5.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-catch-links/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-plugin-catch-links@5.15.0/packages/gatsby-plugin-catch-links)

Updates `gatsby-plugin-feed` from 5.14.0 to 5.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-feed/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-plugin-feed@5.15.0/packages/gatsby-plugin-feed)

Updates `gatsby-plugin-image` from 3.14.0 to 3.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-image/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-plugin-image@3.15.0/packages/gatsby-plugin-image)

Updates `gatsby-plugin-layout` from 4.14.0 to 4.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-layout/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-plugin-layout@4.15.0/packages/gatsby-plugin-layout)

Updates `gatsby-plugin-manifest` from 5.14.0 to 5.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-manifest/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-plugin-manifest@5.15.0/packages/gatsby-plugin-manifest)

Updates `gatsby-plugin-offline` from 6.14.0 to 6.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-offline/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-plugin-offline@6.15.0/packages/gatsby-plugin-offline)

Updates `gatsby-plugin-react-helmet` from 6.14.0 to 6.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-react-helmet/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-plugin-react-helmet@6.15.0/packages/gatsby-plugin-react-helmet)

Updates `gatsby-plugin-sharp` from 5.14.0 to 5.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-sharp/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-plugin-sharp@5.15.0/packages/gatsby-plugin-sharp)

Updates `gatsby-plugin-sitemap` from 6.14.0 to 6.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-sitemap/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-plugin-sitemap@6.15.0/packages/gatsby-plugin-sitemap)

Updates `gatsby-plugin-styled-jsx` from 6.14.0 to 6.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-styled-jsx/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-plugin-styled-jsx@6.15.0/packages/gatsby-plugin-styled-jsx)

Updates `gatsby-remark-copy-linked-files` from 6.14.0 to 6.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-remark-copy-linked-files/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-remark-copy-linked-files@6.15.0/packages/gatsby-remark-copy-linked-files)

Updates `gatsby-remark-images` from 7.14.0 to 7.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-remark-images/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-remark-images@7.15.0/packages/gatsby-remark-images)

Updates `gatsby-remark-prismjs` from 7.14.0 to 7.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-remark-prismjs/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-remark-prismjs@7.15.0/packages/gatsby-remark-prismjs)

Updates `gatsby-remark-responsive-iframe` from 6.14.0 to 6.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-remark-responsive-iframe/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-remark-responsive-iframe@6.15.0/packages/gatsby-remark-responsive-iframe)

Updates `gatsby-remark-smartypants` from 6.14.0 to 6.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-remark-smartypants/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-remark-smartypants@6.15.0/packages/gatsby-remark-smartypants)

Updates `gatsby-source-filesystem` from 5.14.0 to 5.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-source-filesystem/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-source-filesystem@5.15.0/packages/gatsby-source-filesystem)

Updates `gatsby-transformer-remark` from 6.14.0 to 6.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-transformer-remark/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-transformer-remark@6.15.0/packages/gatsby-transformer-remark)

Updates `gatsby-transformer-sharp` from 5.14.0 to 5.15.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-transformer-sharp/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-transformer-sharp@5.15.0/packages/gatsby-transformer-sharp)

---
updated-dependencies:
- dependency-name: gatsby
  dependency-version: 5.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby
- dependency-name: gatsby-core-utils
  dependency-version: 4.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby
- dependency-name: gatsby-plugin-catch-links
  dependency-version: 5.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby
- dependency-name: gatsby-plugin-feed
  dependency-version: 5.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby
- dependency-name: gatsby-plugin-image
  dependency-version: 3.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby
- dependency-name: gatsby-plugin-layout
  dependency-version: 4.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby
- dependency-name: gatsby-plugin-manifest
  dependency-version: 5.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby
- dependency-name: gatsby-plugin-offline
  dependency-version: 6.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby
- dependency-name: gatsby-plugin-react-helmet
  dependency-version: 6.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby
- dependency-name: gatsby-plugin-sharp
  dependency-version: 5.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby
- dependency-name: gatsby-plugin-sitemap
  dependency-version: 6.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby
- dependency-name: gatsby-plugin-styled-jsx
  dependency-version: 6.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby
- dependency-name: gatsby-remark-copy-linked-files
  dependency-version: 6.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby
- dependency-name: gatsby-remark-images
  dependency-version: 7.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby
- dependency-name: gatsby-remark-prismjs
  dependency-version: 7.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby
- dependency-name: gatsby-remark-responsive-iframe
  dependency-version: 6.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby
- dependency-name: gatsby-remark-smartypants
  dependency-version: 6.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby
- dependency-name: gatsby-source-filesystem
  dependency-version: 5.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby
- dependency-name: gatsby-transformer-remark
  dependency-version: 6.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby
- dependency-name: gatsby-transformer-sharp
  dependency-version: 5.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gatsby
...

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