Bump css-loader from 3.2.0 to 3.4.0 in /js

Bumps [css-loader](https://github.com/webpack-contrib/css-loader) from 3.2.0 to 3.4.0.
- [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/v3.2.0...v3.4.0)

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

js/package-lock.json

@@ -3471,9 +3471,9 @@
       }
     },
     "css-loader": {
-      "version": "3.3.2",
-      "resolved": "https://registry.npmjs.org/css-loader/-/css-loader-3.3.2.tgz",
-      "integrity": "sha512-4XSiURS+YEK2fQhmSaM1onnUm0VKWNf6WWBYjkp9YbSDGCBTVZ5XOM6Gkxo8tLgQlzkZOBJvk9trHlDk4gjEYg==",
+      "version": "3.4.0",
+      "resolved": "https://registry.npmjs.org/css-loader/-/css-loader-3.4.0.tgz",
+      "integrity": "sha512-JornYo4RAXl1Mzt0lOSVPmArzAMV3rGY2VuwtaDc732WTWjdwTaeS19nCGWMcSCf305Q396lhhDAJEWWM0SgPQ==",
       "dev": true,
       "requires": {
         "camelcase": "^5.3.1",