Bump stylelint from 15.8.0 to 15.9.0

Bumps [stylelint](https://github.com/stylelint/stylelint) from 15.8.0 to 15.9.0.
- [Release notes](https://github.com/stylelint/stylelint/releases)
- [Changelog](https://github.com/stylelint/stylelint/blob/main/CHANGELOG.md)
- [Commits](https://github.com/stylelint/stylelint/compare/15.8.0...15.9.0)

---
updated-dependencies:
- dependency-name: stylelint
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

package.json

@@ -56,7 +56,7 @@
     "sass": "^1.63.4",
     "sass-loader": "^13.3.2",
     "style-loader": "^3.3.3",
-    "stylelint": "^15.8.0",
+    "stylelint": "^15.9.0",
     "stylelint-config-standard": "^33.0.0",
     "stylelint-config-standard-scss": "^9.0.0",
     "stylelint-scss": "^5.0.1",