chore(v4.3.x): release 4.3.8

[github-actions]

🤖 I have created a release beep boop

4.3.8 (2023-07-21)

Bug Fixes

• DASH: Avoid "Possible encoding problem detected!" when appending chunked data (#5376) (6ea1b0f)
• Demo: Trim custom manifestUri to avoid copy-paste errors (#5378) (8cc4ad9)
• Dispatch all emsg boxes, even if they are ID3 (#5428) (dd649b9)
• docs: fix player configuration code in drm config tutorial (#5359) (89e319f)
• DRM: broken keySystemsMapping due to multiple references of drmInfo (#5388) (38b36fa)
• Fix captions from MP4s with multiple trun boxes (#5422) (64fa19f), closes #5328
• Fix DASH rejection of streams with ColourPrimaries and MatrixCoefficients (#5345) (78f6408)
• Fix exception on Tizen due to unsupported Array method (#5429) (527af7f)
• Fix failure when drivers lag behind browser (#5423) (98e2c3e)
• Gap jump at start when first jump lands in a new gap (#5408) (9cb92eb)
• gap jumping when gap exists at start position (#5384) (c1a94ba)
• HLS: Add subtitle role when there are no roles (#5357) (49e3734)
• HLS: Fix dvh1 and dvhe detection as video codec (#5364) (1181a35)
• HLS: Ignore segments with zero duration (#5371) (7b46edd)
• media: Fix region checking in livestreams (#5361) (b77a947), closes #5213
• Populate HDR correctly (#5369) (be65280)
• prevent access to null config_ in SimpleAbrManager (#5362) (e6f69fb)
• UI: Fix resolution selection on src= (#5367) (5118b24)
• WebVTT: Add support to middle position (#5366) (5fc095c)

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[joeyparrish]

Testing of v4.3.x is underway.

[github-actions]

🤖 Release is at https://github.com/shaka-project/shaka-player/releases/tag/v4.3.8 🌻