livekit/v0.7.38

Fixes

• Bump rustls-webpki to 0.103.13, addressing GHSA-82j2-j2ch-gfr8
• Fix missing libwebrtc.jar for Android builds, harden build scripts
• fix: derive simulcasted from non-deprecated TrackInfo fields - #1052 (@cloudwebrtc)
• fix race in download_webrtc to reduce flaky build - #1047 (@hechen-eng)
• Improve WebRTC build scripts and add external_audio_source patch - #1053 (@xianshijing-lk)
• support SimulateScenario through FFI to improve testing - #1069 (@davidzhao)
• TEL-464: reduce redundant resampling in audio filter - #1019 (@hechen-eng)