chore(package): update webpack-cli to version 3.2.2

Closes #108

Author: greenkeeper[bot]

package.json

@@ -89,7 +89,7 @@
     "uglifyjs-webpack-plugin": "^1.1.2",
     "weakset": "^1.0.0",
     "webpack": "^4.8.1",
-    "webpack-cli": "^2.1.3",
+    "webpack-cli": "^3.2.2",
     "webpack-dev-server": "^3.1.1",
     "webpack-merge": "^4.1.2"
   }