Bump css-loader from 4.3.0 to 5.0.0

Bumps [css-loader](https://github.com/webpack-contrib/css-loader) from 4.3.0 to 5.0.0.
- [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/v4.3.0...v5.0.0)

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

package.json

@@ -18,7 +18,7 @@
     "browser-sync": "^2.26.12",
     "confusing-browser-globals": "^1.0.9",
     "copy-webpack-plugin": "^5.1.1",
-    "css-loader": "^4.3.0",
+    "css-loader": "^5.0.0",
     "cssnano": "^4.1.10",
     "del": "^6.0.0",
     "eslint": "^7.11.0",