Bump @storybook/addon-essentials from 7.6.8 to 7.6.12

Bumps [@storybook/addon-essentials](https://github.com/storybookjs/storybook/tree/HEAD/code/addons/essentials) from 7.6.8 to 7.6.12.
- [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/v7.6.12/code/addons/essentials)

---
updated-dependencies:
- dependency-name: "@storybook/addon-essentials"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

package.json

@@ -22,7 +22,7 @@
   "devDependencies": {
     "@fontsource/roboto": "^5.0.8",
     "@mui/icons-material": "^5.15.4",
-    "@storybook/addon-essentials": "^7.6.8",
+    "@storybook/addon-essentials": "^7.6.12",
     "@storybook/addon-interactions": "^7.6.8",
     "@storybook/addon-links": "^7.6.8",
     "@storybook/addon-onboarding": "^1.0.10",