Merge pull request #666 from HashemKhalifa/renovate/webpack-cli-4.x

Update dependency webpack-cli to v4

Author: HashemKhalifa

package.json

@@ -130,7 +130,7 @@
     "sass-loader": "8.0.2",
     "style-loader": "1.3.0",
     "webpack": "4.46.0",
-    "webpack-cli": "3.3.12",
+    "webpack-cli": "4.7.2",
     "webpack-dev-server": "3.11.2",
     "optimize-css-assets-webpack-plugin": "5.0.6",
     "terser-webpack-plugin": "4.2.3",