There is an updated pull request by ericonr against master on the void-packages repository

https://github.com/ericonr/void-packages waybar
https://github.com/void-linux/void-packages/pull/27650

Waybar: update to 0.9.5.
Add missing rfkill functionality and enable new sndio module.

A patch file from https://github.com/void-linux/void-packages/pull/27650.patch is attached