Bump xmlhttprequest-ssl and engine.io-client

Bumps [xmlhttprequest-ssl](https://github.com/mjwwit/node-XMLHttpRequest) and [engine.io-client](https://github.com/socketio/engine.io-client). 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 `engine.io-client` from 3.3.1 to 3.3.3
- [Release notes](https://github.com/socketio/engine.io-client/releases)
- [Changelog](https://github.com/socketio/engine.io-client/blob/main/CHANGELOG.md)
- [Commits](socketio/engine.io-client@3.3.1...3.3.3)

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

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