chore(deps): [security] bump express in /tests/apps/.websocket.disabled

Bumps [express](https://github.com/expressjs/express) from 3.1.2 to 4.17.1. **This update includes a security fix.**
- [Release notes](https://github.com/expressjs/express/releases)
- [Changelog](https://github.com/expressjs/express/blob/master/History.md)
- [Commits](https://github.com/expressjs/express/compare/3.1.2...4.17.1)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

tests/apps/.websocket.disabled/package.json

@@ -4,7 +4,7 @@
   "description": "a basic webscket demo",
   "author": "Luigi Maselli",
   "dependencies": {
-    "express": "3.1.x",
+    "express": "4.17.x",
     "connect": "*",
     "handlebars": "~4.4.5",
     "socket.io": "~2.3.0",