If pipewire-jack can be uninstalled without removing additional dependency packages it is a safer option than removing jack2 and dependency packages to get other packages updated
The package can be reinstalled after updates if system has any audio problems
jack2 and pipewire-jack are both an implementation of the JACK API. pipewire-jack now properly provides jack, which means that it can no longer be installed side-by-side with jack2.
I think you can remove jack2. Run pactree -r jack2 to see what depends on it before removing.
sudo pacman -S pipewire-jack
This will automatically remove jack2 and then you can carry on with the update.
resolving dependencies…
looking for conflicting packages…
:: pipewire-jack and jack2 are in conflict (jack). Remove jack2? [y/N]
error: unresolvable package conflicts detected
error: failed to prepare transaction (conflicting dependencies)
:: pipewire-jack and jack2 are in conflict