Bump stylelint from 13.8.0 to 13.9.0

Bumps [stylelint](https://github.com/stylelint/stylelint) from 13.8.0 to 13.9.0.
- [Release notes](https://github.com/stylelint/stylelint/releases)
- [Changelog](https://github.com/stylelint/stylelint/blob/master/CHANGELOG.md)
- [Commits](stylelint/stylelint@13.8.0...13.9.0)

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

Author: dependabot-preview[bot]

package-lock.json

@@ -46,7 +46,7 @@
     "rimraf": "^3.0.2",
     "sass": "^1.32.4",
     "sass-loader": "^10.1.1",
-    "stylelint": "^13.8.0",
+    "stylelint": "^13.9.0",
     "vue-template-compiler": "^2.6.12"
   },
   "browserslist": [