Update dependency webpack to v5

package.json

@@ -35,7 +35,7 @@
     "tslint": "6.1.3",
     "typescript": "4.1.3",
     "virtual-alexa": "0.7.5",
-    "webpack": "4.44.2",
+    "webpack": "5.76.3",
     "webpack-command": "0.5.0"
   }
 }