New comment by mjeveritt on void-packages repository

https://github.com/void-linux/void-packages/pull/27787#issuecomment-1260186998

Comment:
`PKG_CHECK_MODULES([GTK_30], [gtk+-3.0])` from https://github.com/PintaProject/Pinta/blob/master/configure.ac#L37 suggests the gtk2 issue no longer applies from https://github.com/void-linux/void-packages/pull/27787#issuecomment-895442735