build(deps-dev): bump the storybook group with 6 updates

Bumps the storybook group with 6 updates:

| Package | From | To |
| --- | --- | --- |
| [@storybook/addon-a11y](https://github.com/storybookjs/storybook/tree/HEAD/code/addons/a11y) | `10.2.12` | `10.2.15` |
| [@storybook/addon-docs](https://github.com/storybookjs/storybook/tree/HEAD/code/addons/docs) | `10.2.12` | `10.2.15` |
| [@storybook/builder-webpack5](https://github.com/storybookjs/storybook/tree/HEAD/code/builders/builder-webpack5) | `10.2.12` | `10.2.15` |
| [@storybook/cli](https://github.com/storybookjs/storybook/tree/HEAD/code/lib/cli-storybook) | `10.2.12` | `10.2.15` |
| [@storybook/react-webpack5](https://github.com/storybookjs/storybook/tree/HEAD/code/frameworks/react-webpack5) | `10.2.12` | `10.2.15` |
| [storybook](https://github.com/storybookjs/storybook/tree/HEAD/code/core) | `10.2.12` | `10.2.15` |


Updates `@storybook/addon-a11y` from 10.2.12 to 10.2.15
- [Release notes](https://github.com/storybookjs/storybook/releases)
- [Changelog](https://github.com/storybookjs/storybook/blob/next/CHANGELOG.md)
- [Commits](https://github.com/storybookjs/storybook/commits/v10.2.15/code/addons/a11y)

Updates `@storybook/addon-docs` from 10.2.12 to 10.2.15
- [Release notes](https://github.com/storybookjs/storybook/releases)
- [Changelog](https://github.com/storybookjs/storybook/blob/next/CHANGELOG.md)
- [Commits](https://github.com/storybookjs/storybook/commits/v10.2.15/code/addons/docs)

Updates `@storybook/builder-webpack5` from 10.2.12 to 10.2.15
- [Release notes](https://github.com/storybookjs/storybook/releases)
- [Changelog](https://github.com/storybookjs/storybook/blob/next/CHANGELOG.md)
- [Commits](https://github.com/storybookjs/storybook/commits/v10.2.15/code/builders/builder-webpack5)

Updates `@storybook/cli` from 10.2.12 to 10.2.15
- [Release notes](https://github.com/storybookjs/storybook/releases)
- [Changelog](https://github.com/storybookjs/storybook/blob/next/CHANGELOG.md)
- [Commits](https://github.com/storybookjs/storybook/commits/v10.2.15/code/lib/cli-storybook)

Updates `@storybook/react-webpack5` from 10.2.12 to 10.2.15
- [Release notes](https://github.com/storybookjs/storybook/releases)
- [Changelog](https://github.com/storybookjs/storybook/blob/next/CHANGELOG.md)
- [Commits](https://github.com/storybookjs/storybook/commits/v10.2.15/code/frameworks/react-webpack5)

Updates `storybook` from 10.2.12 to 10.2.15
- [Release notes](https://github.com/storybookjs/storybook/releases)
- [Changelog](https://github.com/storybookjs/storybook/blob/next/CHANGELOG.md)
- [Commits](https://github.com/storybookjs/storybook/commits/v10.2.15/code/core)

---
updated-dependencies:
- dependency-name: "@storybook/addon-a11y"
  dependency-version: 10.2.15
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: storybook
- dependency-name: "@storybook/addon-docs"
  dependency-version: 10.2.15
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: storybook
- dependency-name: "@storybook/builder-webpack5"
  dependency-version: 10.2.15
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: storybook
- dependency-name: "@storybook/cli"
  dependency-version: 10.2.15
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: storybook
- dependency-name: "@storybook/react-webpack5"
  dependency-version: 10.2.15
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: storybook
- dependency-name: storybook
  dependency-version: 10.2.15
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: storybook
...

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Author: dependabot[bot]