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

[RFC] .github/workflows/build.yaml: add armv6l, armv7l-musl to build matrix
https://github.com/void-linux/void-packages/pull/38322

Description:
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#### Testing the changes
- I tested the changes in this PR: **NO** (but it's a trivial change)

This has been how it's done since at least the switch to github CI (#26095), and how it was done in the travis CI era:

https://github.com/void-linux/void-packages/blob/71a25f3e735c1fef4178422b1a2bb70ec8e84e02/.travis.yml#L15-L21

Should it be changed? Is there a reason why CI isn't currently run on armv6l and armv7l-musl?