New comment by meator on void-packages repository

https://github.com/void-linux/void-packages/pull/48123#issuecomment-1882828211

Comment:
When there is no [mention of "or later", it is GPL-3.0-only](https://www.gnu.org/licenses/identify-licenses-clearly.html) AFAIK. So the previous notice was valid and it was GPL-3.0-only. But the author changed his license making this clear. These two variants are usually differentiated in license comment headers in code itself, but the project doesn't use these.

But I'm not a license expert.