Bump engine.io and socket.io in /examples/server/javascript (#1088) #nolog

Bumps [engine.io](https://github.com/socketio/engine.io) to 6.2.1 and updates ancestor dependency [socket.io](https://github.com/socketio/socket.io). These dependencies need to be updated together.


Updates `engine.io` from 4.1.2 to 6.2.1
- [Release notes](https://github.com/socketio/engine.io/releases)
- [Changelog](https://github.com/socketio/engine.io/blob/main/CHANGELOG.md)
- [Commits](socketio/engine.io@4.1.2...6.2.1)

Updates `socket.io` from 3.1.2 to 4.5.3
- [Release notes](https://github.com/socketio/socket.io/releases)
- [Changelog](https://github.com/socketio/socket.io/blob/main/CHANGELOG.md)
- [Commits](socketio/socket.io@3.1.2...4.5.3)

---
updated-dependencies:
- dependency-name: engine.io
  dependency-type: indirect
- dependency-name: socket.io
  dependency-type: direct:production
...

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

examples/server/javascript/package-lock.json

@@ -4,7 +4,7 @@
   "dependencies": {
     "express": "^4.17.1",
     "smoothie": "1.19.0",
-    "socket.io": "^3.0.3",
+    "socket.io": "^4.5.3",
     "socket.io-client": "^3.0.3"
   }
 }