Merge pull request #16 from yf-dev/dependabot/npm_and_yarn/frontend/webpack-dev-server-3.1.11

Bump webpack-dev-server from 2.11.0 to 3.1.11 in /frontend

Author: rishubil

frontend/package.json

@@ -40,6 +40,6 @@
     "vue-loader": "^13.0.5",
     "vue-template-compiler": "^2.4.4",
     "webpack": "^3.6.0",
-    "webpack-dev-server": "^2.9.1"
+    "webpack-dev-server": "^3.1.11"
   }
 }