Merge pull request #3 from ResistanceCN/dependabot/npm_and_yarn/webpack-dev-server-3.1.11

Bump webpack-dev-server from 2.7.1 to 3.1.11

Author: axionl

package.json

@@ -69,7 +69,7 @@
     "typescript": "^3.0",
     "url-loader": "0.5.9",
     "webpack": "3.5.1",
-    "webpack-dev-server": "2.7.1",
+    "webpack-dev-server": "3.1.11",
     "webpack-manifest-plugin": "1.2.1",
     "whatwg-fetch": "2.0.3",
     "worker-loader": "^2.0.0"