Merge pull request #30 from HashemKhalifa/renovate/webpack-cli-3.x

Update dependency webpack-cli to v3.3.4

Author: HashemKhalifa

package.json

@@ -105,7 +105,7 @@
     "style-loader": "0.23.1",
     "terser-webpack-plugin": "1.3.0",
     "webpack": "4.33.0",
-    "webpack-cli": "3.3.2",
+    "webpack-cli": "3.3.4",
     "webpack-dev-server": "3.7.1",
     "webpack-merge": "4.2.1"
   }