build(deps): Bump engine.io and socket.io

Bumps [engine.io](https://github.com/socketio/socket.io) to 6.6.9 and updates ancestor dependency [socket.io](https://github.com/socketio/socket.io). These dependencies need to be updated together.


Updates `engine.io` from 6.2.1 to 6.6.9
- [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/commits/engine.io@6.6.9)

Updates `socket.io` from 4.5.4 to 4.8.3
- [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/4.5.4...socket.io@4.8.3)

---
updated-dependencies:
- dependency-name: engine.io
  dependency-version: 6.6.9
  dependency-type: indirect
- dependency-name: socket.io
  dependency-version: 4.8.3
  dependency-type: direct:production
...

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

Author: dependabot[bot]

package-lock.json

@@ -149,7 +149,7 @@
     "share2nightscout-bridge": "^0.2.12",
     "shiro-trie": "^0.4.9",
     "simple-statistics": "^0.7.0",
-    "socket.io": "~4.5.4",
+    "socket.io": "~4.8.3",
     "socket.io-client": "^4.5.4",
     "stream-browserify": "^3.0.0",
     "style-loader": "^0.23.1",