Bump css-loader from 5.2.7 to 6.1.0

Bumps [css-loader](https://github.com/webpack-contrib/css-loader) from 5.2.7 to 6.1.0.
- [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@v5.2.7...v6.1.0)

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

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

Author: dependabot[bot]

package.json

@@ -47,7 +47,7 @@
     "@typescript-eslint/eslint-plugin": "^4.18.0",
     "@typescript-eslint/parser": "^4.18.0",
     "clean-webpack-plugin": "^3.0.0",
-    "css-loader": "^5.1.3",
+    "css-loader": "^6.1.0",
     "eslint": "^7.22.0",
     "eslint-config-airbnb-base": "^14.2.1",
     "eslint-config-prettier": "^8.1.0",