There is a new pull request by x12a1f against master on the void-packages repository

https://github.com/x12a1f/void-packages libsigrok
https://github.com/void-linux/void-packages/pull/16232

libsigrok: install udev rules (+fix compilation with latest Doxygen)
This update also installs the udev rules provided by libsigrok. They are needed so non-root users can access (USB) devices supported by libsigrok.

The `fix_doxygen.patch` is needed because an update to Doxygen broke compilation. This fix is already included in the latest libsigrok sources but is not released yet.

A patch file from https://github.com/void-linux/void-packages/pull/16232.patch is attached