fix(package.json): update dependencies

Author: pine

package.json

@@ -31,7 +31,7 @@
     "mocha": "^5.0.0",
     "npm-run-all": "^4.1.2",
     "text-encoding": "^0.6.0",
-    "webpack": "^4.0.0",
+    "webpack": "^4.10.2",
     "webpack-cli": "^3.0.0"
   },
   "author": {