chore(v4.3.x): release 4.3.1

[github-actions]

🤖 I have created a release beep boop

4.3.1 (2022-12-08)

Bug Fixes

• cast: Use cast platform APIs in MediaCapabilties polyfill (#4727) (fb1f0dc)
• cea: Fix MAX_ROWS in CEA-708 window (#4757) (3a501c6)
• cea: Fix not rendering CEA-608 on encrypted mp4 segments (#4756) (501d4ca)
• Correct default initDataTransform for legacy Apple Media Keys (#4797) (ac6c4ed)
• Fix bufferBehind setting broken by image segments (#4718) (0e813a1), closes #4717
• Fix compiler error on static use of "this" (#4699) (0e2a12a)
• Fix DRM workaround for Tizen and Xbox with hvc1/hev1 boxes (#4743) (c6b6cff), closes #4742
• Fix subtitles not added to DOM region (#4733) (eea7858), closes #4680
• Fix timestamp offset for ID3 on DAI-HLS (#4696) (52aa102)
• Fix usage of WebCrypto in old browsers (#4711) (2fec68b)
• HLS: Fix detection of Media Playlist for audio and video only in MP4 (#4803) (f814d26)
• HLS: fix lazy load with multiple raw audio tracks (#4715) (ec2a3d6)
• HLS: Fix lowLatencyPresentationDelay when using autoLowLatencyMode (#4712) (824886d)
• HLS: Fix missing roles (#4760) (d27f023), closes #4759
• HLS: Fix support legacy AVC1 codec used in HLS (#4716) (c7e83c4)
• hls: Fix type error in lazy-loading (#4687) (ad41cf4)
• HLS: Single alternative video renditions not working (#4785) (f0024fc)
• Polyfill missing AbortController on Tizen (#4707) (76fae10)
• TTML: Add font-family mapping (#4801) (57780dd)
• TTML: Fix duplicate cues overlapping segment boundaries (#4798) (9faf848), closes #4631
• ui: Check event cancelable before event.preventDefault (#4690) (7a3e66d)
• ui: Fix iOS fullscreen on rotation (#4679) (8504c17)

Performance Improvements

• Caching mediaSource support for browser engine (#4778) (7d2d485)

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[github-actions]

🤖 Release is at https://github.com/shaka-project/shaka-player/releases/tag/v4.3.1 🌻