chore: update webpack to 4.43.0 (#725)

package.json

@@ -104,7 +104,7 @@
     "tslint-loader": "^3.5.4",
     "typedoc": "^0.17.3",
     "typescript": "^3.7.4",
-    "webpack": "^4.39.3",
+    "webpack": "^4.43.0",
     "webpack-cli": "^3.3.11",
     "webpack-dev-server": "^3.10.3",
     "webpack-merge": "^4.1.2",