Bump xmlhttprequest-ssl and socket.io

Bumps [xmlhttprequest-ssl](https://github.com/mjwwit/node-XMLHttpRequest) and [socket.io](https://github.com/socketio/socket.io). These dependencies needed to be updated together.

Updates `xmlhttprequest-ssl` from 1.5.5 to 1.6.3
- [Commits](mjwwit/node-XMLHttpRequest@1.5.5...1.6.3)

Updates `socket.io` from 2.3.0 to 2.5.0
- [Release notes](https://github.com/socketio/socket.io/releases)
- [Changelog](https://github.com/socketio/socket.io/blob/main/CHANGELOG.md)
- [Commits](socketio/socket.io@2.3.0...2.5.0)

---
updated-dependencies:
- dependency-name: xmlhttprequest-ssl
  dependency-type: indirect
- dependency-name: socket.io
  dependency-type: indirect
...

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