Bump css-loader from 5.2.7 to 6.5.1

Bumps [css-loader](https://github.com/webpack-contrib/css-loader) from 5.2.7 to 6.5.1.
- [Release notes](https://github.com/webpack-contrib/css-loader/releases)
- [Changelog](https://github.com/webpack-contrib/css-loader/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack-contrib/css-loader/compare/v5.2.7...v6.5.1)

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

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

package.json

@@ -41,7 +41,7 @@
     "@babel/preset-env": "^7.14.4",
     "autoprefixer": "^10.4.1",
     "babel-loader": "^8.2.3",
-    "css-loader": "^5.2.6",
+    "css-loader": "^6.5.1",
     "eslint": "^7.27.0",
     "eslint-config-airbnb-base": "^14.2.1",
     "eslint-plugin-import": "^2.25.4",