This PR bumps the revision of the `livekit-rust-sdks` crate.

I was running into issue where Cargo was stuck on "Updating git
submodule `https://chromium.googlesource.com/libyuv/libyuv`".

I resolved the issue by forking `libyuv` to
https://github.com/zed-industries/libyuv and updating our
`livekit-rust-sdks` fork to use it in
https://github.com/zed-industries/livekit-rust-sdks/pull/4.

Release Notes:

- N/A