Merge pull request #2 from webViking/dependabot/npm_and_yarn/webpack-dev-server-3.1.11

Bump webpack-dev-server from 2.11.3 to 3.1.11

Author: dev-dwr

package.json

@@ -50,7 +50,7 @@
     "sw-precache-webpack-plugin": "0.11.4",
     "url-loader": "0.6.2",
     "webpack": "3.8.1",
-    "webpack-dev-server": "2.11.3",
+    "webpack-dev-server": "3.1.11",
     "webpack-manifest-plugin": "1.3.2",
     "whatwg-fetch": "2.0.3"
   },