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

https://github.com/tsung-ju/void-packages kbibtex
https://github.com/void-linux/void-packages/pull/27191

New package: kbibtex-0.9.2
Addresses #21514

A patch file from https://github.com/void-linux/void-packages/pull/27191.patch is attached