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

salt: update to 3002
https://github.com/void-linux/void-packages/pull/25860

Description:
Salt 3001 and 3002 would not work on Python 3.9 because the Salt team was using internal fields (`_underscore_prefixed`) from the Python standard library internally for Salt. When Python updated from 3.8 -> 3.9 some of those internal fields changed, so Salt broke. 

This PR updates Salt to version 3002 and includes [a patch by this lovely GitHub user](https://github.com/fepitre/salt/commit/4c5e18bfd092d9003d12c89131f787a57d54cf38) which fixes Salt's internal field issues.