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

v4l2loopback: update to 0.13.1
https://github.com/void-linux/void-packages/pull/49481

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

#### Local build testing
- I built this PR locally for my native architecture, (x86_64-glibc)
- I built this PR locally for these architectures (if supported. mark crossbuilds):
  - aarch64-musl
  - aarch64
  - x86_64-musl
  - i686
  - armv7l-musl
  - armv7l

Previous patch files were removed as they are no longer needed since those patches are included in this update.