Update dependency webpack-cli to v4.7.2

Author: renovate-bot

package-lock.json

@@ -52,7 +52,7 @@
     "tslint": "6.1.1",
     "typescript": "4.2.4",
     "webpack": "4.46.0",
-    "webpack-cli": "4.5.0"
+    "webpack-cli": "4.7.2"
   },
   "dependencies": {
     "flat-cache": "^3.0.0",