There is a new pull request by joshuakraemer against master on the void-packages repository

https://github.com/joshuakraemer/void-packages dkms-kernel-hook
https://github.com/void-linux/void-packages/pull/32550

Add removal of initramfs backup to kernel hook
This is necessary to remove the initramfs backups created by dkms, which otherwise accumulate in /boot.

A patch file from https://github.com/void-linux/void-packages/pull/32550.patch is attached