Update url-loader to the latest version 🚀 (#185)

Author: greenkeeper[bot]

package.json

@@ -72,7 +72,7 @@
     "sass-loader": "^6.0.6",
     "sendmail": "^1.2.0",
     "style-loader": "^0.20.0",
-    "url-loader": "^0.6.2",
+    "url-loader": "^1.0.0",
     "webpack": "^3.6.0",
     "webpack-bundle-analyzer": "^2.9.2",
     "webpack-visualizer-plugin": "^0.1.11"