New comment by ahesford on void-packages repository

https://github.com/void-linux/void-packages/pull/24028#issuecomment-668923137

Comment:
I suspect that this requires a run of `66-update` because this is a major-version update. See https://framagit.org/Obarun/66/raw/master/NEWS.md and please advise. @mobinmob please comment if you can offer additional insight. In the meantime, I have updated `INSTALL.msg` to at least try to capture attention about the matter.