Automatic update for snapd-2.55.3-1.eln118.

Changelog

* Mon Apr 11 2022 Maciek Borzecki <maciek.borzecki@gmail.com> - 2.55.3-1
- Release 2.55.3 to Fedora
* Fri Apr  8 2022 Michael Vogt <michael.vogt@ubuntu.com>
- New upstream release 2.55.3
 - cmd/snap-update-ns: apply content mounts before layouts
 - many: change "transactional" flag to a "transaction" option
 - b/piboot.go: check EEPROM version for RPi4
 - snap/quota,spread: raise lower memory quota limit to 640kb
 - boot,bootloader: add missing grub.cfg assets mocks in some
   tests
 - many: support --ignore-running with refresh many
 - cmd/snap,wrappers: fix wrong implementation of zero count cpu
   quota
 - quota: add some more unit tests around Resource.Change()
 - quota: detect/error if cpu-set is used with cgroup v1
 - quota: add test for `Resource.clone()
 - cmd/snap,client: frontend for cpu/thread quotas
 - tests: update spread test to check right XDG dirs
 - snap: set XDG env vars to new dirs
 - o/snapstate: initialize XDG dirs in HOME migration
 - i/b/kernel_module_load: expand $SNAP_COMMON in module options
 - overlord: add missing grub.cfg assets mocks in manager_tests.go
 - o/snapstate: account for repeat migration in ~/Snap undo
 - b/a: do not set console in kernel command line for arm64
 - sandbox: improve error message from `ProbeCgroupVersion()`
 - tests/main/snap-quota-groups: fix spread test
 - interfaces: add pkcs11 interface
 - o/snapstate: undo migration on 'snap revert'
 - overlord: snapshot exclusions
 - interfaces: add private /dev/shm support to shared-memory
   interface
 - packaging: install Go snap from 1.17 channel in the integration
   tests
 - snap-exec: fix detection if `cups` interface is connected
 - bootloader/piboot: add support for armhf
 - interfaces/system-packages-doc: allow read-only access to
   /usr/share/libreoffice/help
 - daemon: add a /v2/accessories/changes/{ID} endpoint
 - interfaces/appstream-metadata: Re-create app-info links to
   swcatalog
 - tests/main/snap-quota-groups: add 219 as possible exit code
 - store: set validation-sets on actions when refreshing
 - interfaces/appstream-metadata: Support new swcatalog directory
   names
 - asserts,interfaces/policy: slot-snap-id allow-installation
   constraints
 - i/b/network-manager: change rule for ResolveAddress to check only
   label
 - cmd/snap-bootstrap: support booting into factory-reset mode
 - systemd: do not reload system when enabling/disabling services