Bump socket.io-parser in /tkey-mpc-react-popup-example

Bumps [socket.io-parser](https://github.com/socketio/socket.io-parser) from 4.2.2 to 4.2.4.
- [Release notes](https://github.com/socketio/socket.io-parser/releases)
- [Changelog](https://github.com/socketio/socket.io-parser/blob/main/CHANGELOG.md)
- [Commits](socketio/socket.io-parser@4.2.2...4.2.4)

---
updated-dependencies:
- dependency-name: socket.io-parser
  dependency-type: indirect
...

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