Bump stylelint from 15.6.2 to 15.9.0

Bumps [stylelint](https://github.com/stylelint/stylelint) from 15.6.2 to 15.9.0.
- [Release notes](https://github.com/stylelint/stylelint/releases)
- [Changelog](https://github.com/stylelint/stylelint/blob/main/CHANGELOG.md)
- [Commits](stylelint/stylelint@15.6.2...15.9.0)

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

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

Author: dependabot[bot]

package-lock.json

@@ -86,7 +86,7 @@
         "mini-css-extract-plugin": "^2.7.6",
         "script-loader": "^0.7.2",
         "strip-sourcemap-loader": "^0.0.1",
-        "stylelint": "^15.6.2",
+        "stylelint": "^15.9.0",
         "stylelint-config-standard-scss": "^9.0.0",
         "terser": "^5.17.7",
         "webpack": "^5.88.1",