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

https://github.com/Duncaen/void-packages firefox-123
https://github.com/void-linux/void-packages/pull/48859

firefox: update to 123.0.
[ci skip]

* [ ] x86_64-glibc
* [ ] x86_64-musl
* [ ] aarch64-musl
* [ ] i686-glibc

A patch file from https://github.com/void-linux/void-packages/pull/48859.patch is attached