mailcow 2022-11 release notes

What’s Changed

Add new action Check PRs if on staging by @MAGICCC in https://github.com/mailcow/mailcow-dockerized/pull/4837
Add undocumented /api/v1/get/mailbox/all/domain.tld endpoint to docs by @jorisdrenth in https://github.com/mailcow/mailcow-dockerized/pull/4846
Fixy comment typo by @benpro in https://github.com/mailcow/mailcow-dockerized/pull/4869
[PHP] Update to 8.1 by @DerLinkman in https://github.com/mailcow/mailcow-dockerized/pull/4844
[PHP] Polish phpfpm dockerfile by @BigMichi1 in https://github.com/mailcow/mailcow-dockerized/pull/4855
change ‘return 1’ to ‘exit 1’ by @nathanielmom in https://github.com/mailcow/mailcow-dockerized/pull/4848
Update Simplified Chinese Translation by @yhdsl in https://github.com/mailcow/mailcow-dockerized/pull/4860
Pushover improvements by @bluewalk in https://github.com/mailcow/mailcow-dockerized/pull/4864
Add new action Build mailcow backup image by @MAGICCC in https://github.com/mailcow/mailcow-dockerized/pull/4868
[Rspamd] Update to 3.4 (fix of 3.3 Bug) by @DerLinkman in https://github.com/mailcow/mailcow-dockerized/pull/4845
Translations update from Weblate by @milkmaker in https://github.com/mailcow/mailcow-dockerized/pull/4873
Update SOGo to 5.8.0 nightly by @FreddleSpl0it in https://github.com/mailcow/mailcow-dockerized/pull/4877
switch update.sh/check_online_status() from ping to curl to make it p… by @mitch-geht-ab in https://github.com/mailcow/mailcow-dockerized/pull/4859

Full Changelog: https://github.com/mailcow/mailcow-dockerized/compare/2022-10a…2022-11