Bump stylelint-webpack-plugin from 2.1.1 to 2.2.0

Bumps [stylelint-webpack-plugin](https://github.com/webpack-contrib/stylelint-webpack-plugin) from 2.1.1 to 2.2.0.
- [Release notes](https://github.com/webpack-contrib/stylelint-webpack-plugin/releases)
- [Changelog](https://github.com/webpack-contrib/stylelint-webpack-plugin/blob/master/CHANGELOG.md)
- [Commits](webpack-contrib/stylelint-webpack-plugin@v2.1.1...v2.2.0)

---
updated-dependencies:
- dependency-name: stylelint-webpack-plugin
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

package.json

@@ -54,7 +54,7 @@
 		"stylelint": "^13.13.1",
 		"stylelint-config-recommended-scss": "^4.2.0",
 		"stylelint-scss": "^3.19.0",
-		"stylelint-webpack-plugin": "^2.1.1",
+		"stylelint-webpack-plugin": "^2.2.0",
 		"url-loader": "^4.1.1",
 		"vue-loader": "^15.9.7",
 		"vue-style-loader": "^4.1.3",