Bump stylelint from 13.11.0 to 13.12.0 (#57)

Bumps [stylelint](https://github.com/stylelint/stylelint) from 13.11.0 to 13.12.0.
- [Release notes](https://github.com/stylelint/stylelint/releases)
- [Changelog](https://github.com/stylelint/stylelint/blob/master/CHANGELOG.md)
- [Commits](stylelint/stylelint@13.11.0...13.12.0)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package.json

@@ -46,7 +46,7 @@
     "load-grunt-tasks": "5.1.0",
     "postcss": "8.2.7",
     "sass": "1.32.8",
-    "stylelint": "13.11.0",
+    "stylelint": "13.12.0",
     "stylelint-order": "4.1.0",
     "stylelint-scss": "3.19.0"
   },