chore(deps): update dependency webpack to v4.40.2

Author: renovate-bot

sample/08-webpack/package-lock.json

@@ -21,7 +21,7 @@
     "ts-loader": "6.1.0",
     "ts-node": "8.3.0",
     "tslint": "5.20.0",
-    "webpack": "4.39.3",
+    "webpack": "4.40.2",
     "webpack-cli": "3.3.8",
     "webpack-node-externals": "1.7.2"
   }