Bump @storybook/addon-essentials from 6.1.14 to 6.1.15

Bumps [@storybook/addon-essentials](https://github.com/storybookjs/storybook/tree/HEAD/addons/essentials) from 6.1.14 to 6.1.15.
- [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/v6.1.15/addons/essentials)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package.json

@@ -48,7 +48,7 @@
     "@apollo/client": "^3.3.7",
     "@babel/core": "^7.12.10",
     "@storybook/addon-a11y": "^6.1.14",
-    "@storybook/addon-essentials": "^6.1.14",
+    "@storybook/addon-essentials": "^6.1.15",
     "@storybook/addon-links": "^6.1.14",
     "@storybook/react": "^6.1.14",
     "algoliasearch": "^4.8.4",