Update dependency stylelint to v14.6.0 (#46626)

* Update dependency stylelint to v14.6.0

* remove old rule that wasn't working properly

* Revert "remove old rule that wasn't working properly"

This reverts commit 41a96ebad2.

* allow any border values

* fix typo

Co-authored-by: Renovate Bot <bot@renovateapp.com>
Co-authored-by: Ashley Harrison <ashley.harrison@grafana.com>

package.json

@@ -221,7 +221,7 @@
     "sass-loader": "12.6.0",
     "sinon": "13.0.1",
     "style-loader": "3.3.1",
-    "stylelint": "14.5.0",
+    "stylelint": "14.6.0",
     "stylelint-config-prettier": "9.0.3",
     "stylelint-config-sass-guidelines": "9.0.1",
     "terser-webpack-plugin": "5.3.1",