Build(deps-dev): Bump css-loader from 6.7.3 to 6.8.1

Bumps [css-loader](https://github.com/webpack-contrib/css-loader) from 6.7.3 to 6.8.1.
- [Release notes](https://github.com/webpack-contrib/css-loader/releases)
- [Changelog](https://github.com/webpack-contrib/css-loader/blob/master/CHANGELOG.md)
- [Commits](webpack-contrib/css-loader@v6.7.3...v6.8.1)

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

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

package.json

@@ -23,7 +23,7 @@
 		"@nextcloud/browserslist-config": "^2.3.0",
 		"babel-loader": "^9.1.2",
 		"clean-webpack-plugin": "^4.0.0",
-		"css-loader": "^6.7.3",
+		"css-loader": "^6.8.1",
 		"escape-html": "^1.0.3",
 		"file-loader": "^6.2.0",
 		"promise-loader": "^1.0.0",