Automatic update from web-platform-tests Add WebSocket/H3 handshake helpers for WPT (#60554) * Add WebSocket/H3 handshake helpers for WPT * Add WebSocket/H3 handshake helpers for WPT --------- Co-authored-by: Mayur Patil <patilmayur@microsoft.com> -- wpt-commits: edb7f2309faf3a5dda5f147cb6d9198e253c828e wpt-pr: 60554