Merge pull request bvaughn#366 from bvaughn/dependabot/npm_and_yarn/website/webpack-dev-server-3.1.11

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

Author: Brian Vaughn

website/package.json

@@ -64,7 +64,7 @@
  "thread-loader": "1.1.2",
  "url-loader": "0.6.2",
  "webpack": "3.10.0",
- "webpack-dev-server": "2.11.0",
+ "webpack-dev-server": "3.1.11",
  "webpack-manifest-plugin": "1.3.2",
  "whatwg-fetch": "2.0.3"
  },