fix(package.json): Update dependency webpack-dev-server to v3.11.0

Author: renovate-bot

package.json

@@ -62,7 +62,7 @@
     "uglifyjs-webpack-plugin": "1.3.0",
     "url-loader": "1.1.2",
     "webpack": "4.43.0",
-    "webpack-dev-server": "3.10.3",
+    "webpack-dev-server": "3.11.0",
     "webpack-manifest-plugin": "2.2.0",
     "whatwg-fetch": "3.0.0",
     "workbox-webpack-plugin": "4.3.1"