Bump socket.io from 1.7.2 to 2.4.0 in /frontend/debug/socket
Bumps [socket.io](https://github.com/socketio/socket.io) from 1.7.2 to 2.4.0. - [Release notes](https://github.com/socketio/socket.io/releases) - [Changelog](https://github.com/socketio/socket.io/blob/2.4.0/CHANGELOG.md) - [Commits](https://github.com/socketio/socket.io/compare/1.7.2...2.4.0) Signed-off-by: dependabot[bot] <[email protected]>