aa-status was merged back in apparmor in 3d5b5245 during the bookworm rebase because the reason of the split was no longer valid. Unfortunately, the dependency of apparmor-utils-tests was not updated.
apparmor-utils-tests is not installable and makes tests failing with messages like:
apparmor-utils-tests : Depends: aa-status but it is not installable
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Unable to start stage 1. Read the log for more details.