There is a new pull request by paper42 against master on the void-packages repository

https://github.com/paper42/void-packages remove-im6
https://github.com/void-linux/void-packages/pull/32494

ImageMagick6: remove package
The only dependenant of ImageMagick6 is img2pdf and it only needs im6 for tests

A patch file from https://github.com/void-linux/void-packages/pull/32494.patch is attached