There's a merged pull request on the void-packages repository

mpv: update to 0.38.0.
https://github.com/void-linux/void-packages/pull/49924

Description:
- I tested the changes in this PR: **YES**
- I built this PR locally for my native architecture, (x86_64-glibc)
- I built this PR locally for these architectures:
  - x86_64-musl
  - aarch64-musl

About shaderc disabling: https://github.com/mpv-player/mpv/commit/60a31a8a284e539043c47a33ff90f3d55aade6a8