mantic kernel 6.5.0.1006 Adds io_uring apparmor feature

Did the following to ensure that current features, as listed in the files, are the same:

1. uploaded livecd-rootfs/live-build/apparmor/generic to test machine
2. ran following snippet
for dirn in ./*; do
 for filename in ${dirn}/*; do
  if [[ -f $filename ]]; then
   diffname=$(realpath $filename)
   echo "diffing $diffname to /sys/kernel/security/apparmor/features/${filename:2}"
   diff $diffname /sys/kernel/security/apparmor/features/${filename:2}
  fi
 done
done

diffing /home/ubuntu/caps/mask to /sys/kernel/security/apparmor/features/caps/mask
diffing /home/ubuntu/dbus/mask to /sys/kernel/security/apparmor/features/dbus/mask
diffing /home/ubuntu/domain/change_hat to /sys/kernel/security/apparmor/features/domain/change_hat
diffing /home/ubuntu/domain/change_hatv to /sys/kernel/security/apparmor/features/domain/change_hatv
diffing /home/ubuntu/domain/change_onexec to /sys/kernel/security/apparmor/features/domain/change_onexec
diffing /home/ubuntu/domain/change_profile to /sys/kernel/security/apparmor/features/domain/change_profile
diffing /home/ubuntu/domain/computed_longest_left to /sys/kernel/security/apparmor/features/domain/computed_longest_left
diffing /home/ubuntu/domain/fix_binfmt_elf_mmap to /sys/kernel/security/apparmor/features/domain/fix_binfmt_elf_mmap
diffing /home/ubuntu/domain/post_nnp_subset to /sys/kernel/security/apparmor/features/domain/post_nnp_subset
diffing /home/ubuntu/domain/stack to /sys/kernel/security/apparmor/features/domain/stack
diffing /home/ubuntu/domain/version to /sys/kernel/security/apparmor/features/domain/version
diffing /home/ubuntu/file/mask to /sys/kernel/security/apparmor/features/file/mask
diffing /home/ubuntu/ipc/posix_mqueue to /sys/kernel/security/apparmor/features/ipc/posix_mqueue
diffing /home/ubuntu/mount/mask to /sys/kernel/security/apparmor/features/mount/mask
diffing /home/ubuntu/namespaces/mask to /sys/kernel/security/apparmor/features/namespaces/mask
diffing /home/ubuntu/namespaces/pivot_root to /sys/kernel/security/apparmor/features/namespaces/pivot_root
diffing /home/ubuntu/namespaces/profile to /sys/kernel/security/apparmor/features/namespaces/profile
diffing /home/ubuntu/network/af_mask to /sys/kernel/security/apparmor/features/network/af_mask
diffing /home/ubuntu/network/af_unix to /sys/kernel/security/apparmor/features/network/af_unix
diffing /home/ubuntu/network_v8/af_mask to /sys/kernel/security/apparmor/features/network_v8/af_mask
diffing /home/ubuntu/policy/outofband to /sys/kernel/security/apparmor/features/policy/outofband
diffing /home/ubuntu/policy/set_load to /sys/kernel/security/apparmor/features/policy/set_load
diffing /home/ubuntu/ptrace/mask to /sys/kernel/security/apparmor/features/ptrace/mask
diffing /home/ubuntu/rlimit/mask to /sys/kernel/security/apparmor/features/rlimit/mask
diffing /home/ubuntu/signal/mask to /sys/kernel/security/apparmor/features/signal/mask

not perfect, but it does show nothing, file to file that i matched, has changed.

From the snap perspective:

snap debug seeding

seeded: true
preseeded: true
image-preseeding: 5.988s
seed-completion: 3.098s
preseed-system-key: {
  "apparmor-features": [
    "caps",
    "dbus",
...

This bug was fixed in the package livecd-rootfs - 23.10.55

---------------
livecd-rootfs (23.10.55) mantic; urgency=medium

  * fix: add 6.5 kernel appamor features to livecd-rootfs based on
    features pulled from 6.5.0.1006 kernel in proposed (LP: #2037567)

 -- jchittum <email address hidden> Thu, 05 Oct 2023 11:10:43 -0500

We need to backport this to 22.04 before HWE kernels roll to 6.5 otherwise we will have a similar issue with 22.04.