fix: update webpack

Author: pine

package.json

@@ -31,7 +31,7 @@
     "mocha": "^6.0.0",
     "npm-run-all": "^4.1.2",
     "text-encoding": "^0.7.0",
-    "webpack": "4.29.1",
+    "webpack": "^4.41.1",
     "webpack-cli": "^3.1.1"
   },
   "author": {