Bump to livekit 1.1.6 (#21660)

Co-Authored-By: Mikayla <mikayla@zed.dev>

This bumps to the latest v1 version of swift SDK. We could bump to 2,
but it
sounds like this will already have some race condition fixes (and a
click
around locally seems less prone to deadlocking so far...)

Release Notes:

- N/A