Bump cookie, express and socket.io in /traffic_portal

Bumps [cookie](https://github.com/jshttp/cookie) to 0.7.2 and updates ancestor dependencies [cookie](https://github.com/jshttp/cookie), [express](https://github.com/expressjs/express) and [socket.io](https://github.com/socketio/socket.io). These dependencies need to be updated together.


Updates `cookie` from 0.6.0 to 0.7.2
- [Release notes](https://github.com/jshttp/cookie/releases)
- [Commits](jshttp/cookie@v0.6.0...v0.7.2)

Updates `express` from 4.21.0 to 4.21.1
- [Release notes](https://github.com/expressjs/express/releases)
- [Changelog](https://github.com/expressjs/express/blob/4.21.1/History.md)
- [Commits](expressjs/express@4.21.0...4.21.1)

Updates `socket.io` from 4.7.2 to 4.8.1
- [Release notes](https://github.com/socketio/socket.io/releases)
- [Changelog](https://github.com/socketio/socket.io/blob/main/CHANGELOG.md)
- [Commits](https://github.com/socketio/socket.io/compare/[email protected])

---
updated-dependencies:
- dependency-name: cookie
  dependency-type: indirect
- dependency-name: express
  dependency-type: direct:development
- dependency-name: socket.io
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>

traffic_portal/package.json

@@ -24,7 +24,7 @@
     "connect-livereload": "0.6.1",
     "connect-modrewrite": "0.10.2",
     "connect-timeout": "1.9.0",
-    "express": "4.21.0",
+    "express": "4.21.1",
     "grunt": "1.5.3",
     "grunt-browserify": "6.0.0",
     "grunt-contrib-clean": "2.0.1",