Today pacman has been updated to 7.0.0.
The maintainer of libpamac-aur will have to update that package, currently requiring pacman <6.2, accordingly. See PKGBUILD.
https://aur.archlinux.org/cgit/aur.git/tree/PKGBUILD?h=libpamac-aur
If I were you, I’d get rid of pamac-aur or pamac-cli, requiring libpamac-aur, at least for a while…
And welcome to the forum! 