Bump stylelint-config-recommended-scss from 5.0.2 to 6.0.0 in /frontend

Bumps [stylelint-config-recommended-scss](https://github.com/stylelint-scss/stylelint-config-recommended-scss) from 5.0.2 to 6.0.0.
- [Release notes](https://github.com/stylelint-scss/stylelint-config-recommended-scss/releases)
- [Changelog](https://github.com/stylelint-scss/stylelint-config-recommended-scss/blob/master/CHANGELOG.md)
- [Commits](stylelint-scss/stylelint-config-recommended-scss@v5.0.2...v6.0.0)

---
updated-dependencies:
- dependency-name: stylelint-config-recommended-scss
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

frontend/package.json

@@ -64,7 +64,7 @@
     "sass": "^1.49.9",
     "stylelint": "^14.6.0",
     "stylelint-config-prettier-scss": "^0.0.1",
-    "stylelint-config-recommended-scss": "^5.0.2",
+    "stylelint-config-recommended-scss": "^6.0.0",
     "stylelint-scss": "^4.2.0",
     "typescript": "^4.6.2"
   },