Bump stylelint from 13.13.1 to 15.10.1

Bumps [stylelint](https://github.com/stylelint/stylelint) from 13.13.1 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/13.13.1...15.10.1)

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

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

package.json

@@ -22,7 +22,7 @@
     "nyc": "^15.0.0",
     "sinon": "^7.5.0",
     "sinon-chai": "^3.3.0",
-    "stylelint": "^13.5.0",
+    "stylelint": "^15.10.1",
     "stylelint-config-standard": "^20.0.0",
     "stylelint-order": "^4.0.0",
     "web-ext": "^7.5.0",