Update snapd to 2.37.2
Changelog:
- cmd/snap, overlord/snapstate: ignore classic flag when a
- snap is strictly confined and warn only instead of erroring
- snap-confine: remove special handling of /var/lib/jenkins
- cmd/snap-confine: handle death of helper process gracefully
- snap-confine: fix classic snaps for users with /var/lib/* homedirs like jenkins/postgres
- packaging: disable systemd environment generator on 18.04
- tests: update smoke/sandbox test for armhf
- cmd/snap-confine: refactor and cleanup of seccomp loading
- snap-confine: increase locking timeout to 30s
- snap-confine: fix incorrect "sanity timeout 3s" message
- snap: fix hook autodiscovery for parallel installed snaps
- tests: iterate getting journal logs to support delay on boards on daemon-notify test
- interfaces: add u2f-devices interface