Bump css-loader from 4.2.2 to 4.3.0

Bumps [css-loader](https://github.com/webpack-contrib/css-loader) from 4.2.2 to 4.3.0.
- [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@v4.2.2...v4.3.0)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package.json

@@ -29,7 +29,7 @@
     "clean-webpack-plugin": "3.0.0",
     "copy-webpack-plugin": "6.1.0",
     "cross-env": "7.0.2",
-    "css-loader": "4.2.2",
+    "css-loader": "4.3.0",
     "file-loader": "6.1.0",
     "mini-css-extract-plugin": "0.11.0",
     "postcss-loader": "3.0.0",