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

mpv: update to 0.37.0, libplacebo: update to 6.338.1
https://github.com/void-linux/void-packages/pull/47361

Description:
#### Testing the changes
- I tested the changes in this PR: **played movie**

#### Local build testing
- I built this PR locally for my native architecture, (x64 glibc)