Merge pull request #455 from halfzebra/renovate/url-loader-4.x

BREAKING CHANGE: Update dependency url-loader to v4

Author: halfzebra

package.json

@@ -60,7 +60,7 @@
     "strip-ansi": "6.0.0",
     "style-loader": "1.2.1",
     "uglifyjs-webpack-plugin": "1.3.0",
-    "url-loader": "1.1.2",
+    "url-loader": "4.1.0",
     "webpack": "4.44.2",
     "webpack-dev-server": "3.11.0",
     "webpack-manifest-plugin": "2.2.0",