chore(package): update resolve-url-loader to version 2.3.1

Author: greenkeeper[bot]

package.json

@@ -32,7 +32,7 @@
     "ng-annotate-patched": "1.7.0",
     "ngtemplate-loader": "2.0.1",
     "node-sass": "^4.9.2",
-    "resolve-url-loader": "2.3.0",
+    "resolve-url-loader": "2.3.1",
     "rimraf": "2.6.2",
     "sass-loader": "7.1.0",
     "style-loader": "0.22.1",