Bump stylelint from 9.10.1 to 15.10.1

Bumps [stylelint](https://github.com/stylelint/stylelint) from 9.10.1 to 15.10.1.
- [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/9.10.1...15.10.1)

---
updated-dependencies:
- dependency-name: stylelint
  dependency-type: direct:development
...

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

package.json

@@ -17,7 +17,7 @@
     "gulp-minify": "^3.1.0",
     "gulp-sass": "^4.0.2",
     "gulp-stylelint": "^8.0.0",
-    "stylelint": "^9.10.1",
+    "stylelint": "^15.10.1",
     "yargs": "^13.2.1"
   }
 }