This AUR package: kirigami-addons-git is upholding the update process.
It depends on ki18n which needs to be updated to ki18n5. The name change is due to the transition of Plasma framework 5 to 6.
I would remove the AUR package and update the system.
If you need to reinstall the package from AUR, you should probably edit the PKGBUILD for the dependencies to match the new name.
Or flag it out of date for the maintainer to update the PKGBUILD