Revert "Change package priority to required"

Changing priority to required allowed to force debootstrap to pick up the package, but prevents replacement by gpgv package when building basesdk or devroot ospacks.
As debootstrap only picks up the first dependency in an alternatives list, this has been fixed in apt package by setting sequoia-gpgv first in the list of alternative dependencies.

This reverts commit af3316a9.

Signed-off-by: Frédéric Danis frederic.danis@collabora.com