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

routinator: update to 0.12.0
https://github.com/void-linux/void-packages/pull/39516

Description:
I also have a draft PR #37848 and would appreciate feedback on if there's anything else that should be done there.

#### Testing the changes
- I tested the changes in this PR: **YES**
Release notes at https://github.com/NLnetLabs/routinator/releases

#### Local build testing
- I built this PR locally for my native architecture, (x86_64-glibc, x86_64-musl)
- I built this PR locally for these architectures:
  - aarch64-musl
  - armv7l
  - armv6l-musl
  - x86_64-musl