Thhat is because you have the one from the extrarepository installed, which is the recommendation, but, since you have the AUR enabled, pamac sees that one, that has a higher rebuild number and wants to up-/downgrade to that.
So the way i see it, you’ve got two options:
Either turn the AUR off and work with the repositories only; or
ignore it and see what happens.
a Reminder: While use of the AUR is possible, it’s neither recommended nor supported. See: