build(deps): bump socket.io from 4.8.0 to 4.8.1 in /teammapper-backend

Bumps [socket.io](https://github.com/socketio/socket.io) from 4.8.0 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]@4.8.1)

---
updated-dependencies:
- dependency-name: socket.io
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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