chore(package): update webpack to version 4.17.0

Author: greenkeeper[bot]

package.json

@@ -41,7 +41,7 @@
     "tslint": "5.11.0",
     "typescript": "^3.0.1",
     "uglifyjs-webpack-plugin": "^1.2.7",
-    "webpack": "4.16.5",
+    "webpack": "4.17.0",
     "webpack-cli": "3.1.0",
     "webpack-dev-server": "3.1.5"
   },