Additional PHP 8.0+ compat fixes

Additional fixes to resource/Socket handling for PHP 8.0+, thanks to @jlcooke.

See https://php.watch/versions/8.0/sockets-sockets-addressinfo for details.

What's Changed

• Update Client.php by @jlcooke in #1
• Update Connection.php by @jlcooke in #2

New Contributors

• @jlcooke made their first contribution in #1

Full Changelog: 0.2.2...0.2.3