rtc-v0.15.1

What's Changed

Fixed a crash on the FfiClient drop_handle when unsubscribing from a track

• rtc-v0.15.1 by @theomonnom in https://github.com/livekit/python-sdks/pull/247

Full Changelog: https://github.com/livekit/python-sdks/compare/rtc-v0.15.0...rtc-v0.15.1