Bump url-loader from 3.0.0 to 4.0.0 in /js

Bumps [url-loader](https://github.com/webpack-contrib/url-loader) from 3.0.0 to 4.0.0.
- [Release notes](https://github.com/webpack-contrib/url-loader/releases)
- [Changelog](https://github.com/webpack-contrib/url-loader/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack-contrib/url-loader/compare/v3.0.0...v4.0.0)

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

js/package.json

@@ -35,7 +35,7 @@
     "karma": "^4.4.1",
     "mini-css-extract-plugin": "^0.9.0",
     "style-loader": "^1.1.3",
-    "url-loader": "^3.0.0",
+    "url-loader": "^4.0.0",
     "vue-loader": "^15.9.1",
     "vue-style-loader": "^4.1.2",
     "vue-template-compiler": "^2.6.11",