Bump dev server

package.json

@@ -57,6 +57,6 @@
     "react-dom": "^16.5.2",
     "webpack": "^4.19.1",
     "webpack-cli": "^3.1.2",
-    "webpack-dev-server": "^3.1.8"
+    "webpack-dev-server": "^3.1.14"
   }
 }