Bump css-loader from 5.2.0 to 5.2.1 (#6919)

Bumps [css-loader](https://github.com/webpack-contrib/css-loader) from 5.2.0 to 5.2.1.
- [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@v5.2.0...v5.2.1)

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

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

package.json

@@ -126,7 +126,7 @@
     "commander": "6.2.1",
     "concurrently": "^6.0.0",
     "cspell": "^5.3.8",
-    "css-loader": "^5.2.0",
+    "css-loader": "^5.2.1",
     "dotenv": "^8.2.0",
     "github-api": "^3.4.0",
     "graphql": "^15.4.0",