Bump css-loader from 2.1.1 to 3.1.0 (#11382)

* Bump css-loader from 2.1.1 to 3.1.0

Bumps [css-loader](https://github.com/webpack-contrib/css-loader) from 2.1.1 to 3.1.0.
- [Release notes](https://github.com/webpack-contrib/css-loader/releases)
- [Changelog](https://github.com/webpack-contrib/css-loader/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack-contrib/css-loader/compare/v2.1.1...v3.1.0)

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

* localIdentName -> modules.localIdentName

config/webpack/rules/css.js

@@ -9,7 +9,9 @@ module.exports = {
       options: {
         sourceMap: true,
         importLoaders: 2,
-        localIdentName: '[name]__[local]___[hash:base64:5]',
+        modules: {
+          localIdentName: '[name]__[local]___[hash:base64:5]',
+        },
       },
     },
     {