Bump css-loader from 6.6.0 to 6.7.0

Bumps [css-loader](https://github.com/webpack-contrib/css-loader) from 6.6.0 to 6.7.0.
- [Release notes](https://github.com/webpack-contrib/css-loader/releases)
- [Changelog](https://github.com/webpack-contrib/css-loader/blob/master/CHANGELOG.md)
- [Commits](webpack/css-loader@v6.6.0...v6.7.0)

---
updated-dependencies:
- dependency-name: css-loader
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package-lock.json

@@ -15,7 +15,7 @@
 		"@nextcloud/browserslist-config": "^2.2.0",
 		"babel-loader": "8.2.3",
 		"clean-webpack-plugin": "^4.0.0",
-		"css-loader": "^6.6.0",
+		"css-loader": "^6.7.0",
 		"json-loader": "0.5.7",
 		"mini-css-extract-plugin": "^2.5.3",
 		"postcss": "^8.4.7",