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

zsh: add alternative for sh
https://github.com/void-linux/void-packages/pull/34540

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

The system boots and basic usage seems to work fine with zsh as `/bin/sh`.


#### Local build testing
- I built this PR locally for my native architecture, x86_64-glibc