Merge pull request #4432 from DerLinkman/staging

Images which get a new tag (on docker hub):

unbound-mailcow (Tag 1.15)
acme-mailcow (Tag 1.81)
dockerapi-mailcow (Tag 1.41)
netfilter-mailcow (Tag 1.46)
watchdog-mailcow (Tag 1.96)
These docker tag changes include the Alpine Update to 3.15

clamd-mailcow (Tag 1.43)
sogo-mailcow (Tag 1.106)
olefy-mailcow (Tag 1.8.1)
dovecot-mailcow (Tag 1.159)
solr-mailcow (Tag 1.8.1)
Very important changes:

U2F API Removal --> Replaced with WebAuthn API (TFA) [More Details here] (Thanks to @FreddleSpl0it)
Important changes:

Dovecot Update to 2.3.17.1
SOGO Update to 5.5.0
ClamAV Update to 0.103.5 (DDOS Fix)
Solr Security Fix Fix (Removed breached log4j Class)
Alpine Linux Update to 3.15
Better Acme SSL Path recognition for Alpine Versions after 3.15 (Thanks to @mkuron) --> Fixing issue: Possible regression in acme-mailcow 1.80 #4392
Olefy Ping Fix (Will fix: Olefy 1.8 broken  #4401) (Thanks to @a16bitsysop for the Fix!)
Netfilter GeoIP Fix (Thanks to @marcvorwerk) --> Fixing issue: Netfilter Python error #2668

Signed-off-by: Kristian Feldsam <feldsam@gmail.com>

Migrating from U2F to WebAuthn for 2FA

Added xtables-addon to netfilter container to handle iptables rules with geoip
**Commited by: @marcvorwerk**

This PR is updating SOGo to the new 5.5.0 Release (https://github.com/inverse-inc/sogo/releases/tag/SOGo-5.5.0) <-- Available in master.

It also includes the nsyslog Update to 3.28 (since the new SOGo builds are using a newer version), which fix a warning message inside the sogo container that the nsyslog version is outdated and can be upgraded to 3.28

This new release will have the Docker Image Tag: mailcow/sogo:1.106

This PR includes the Alpine Update 3.15 for the watchdog-mailcow container.

Fully tested (works flawlessly due to the fact that only the os got updated, not the script).

This PR will have the docker tag: mailcow/watchdog:1.96

New Docker Tag: mailcow/sogo:1.106

This PR is updating the olefy-mailcow container to Alpine 3.15.

It is also including the ping fix from @a16bitsysop which is solving the issue: #4401

The PR includes a temporarily local copy of the olefy.py file which includes the named fix. When this fix is officially merged into the olefy project we will update the olefy container again.

The new docker image tag is: mailcow/olefy:1.8.1

This is temporarily until the issue fix is merged into master.

Temporarily fix for https://github.com/HeinleinSupport/olefy/pull/14

Thanks to @mkuron this fix will change the ssl path to be dynamic (not hardcoded) to ensure that acme is still working with Alpine 3.15 or higher.

This PR is included in the Docker tag: mailcow/acme:1.81 (including the Alpine 3.15 update)

Image Tag: mailcow/clamd:1.43

[Clamd] Update to 0.103.5 (DDOS Fix) (Docker Image Tag mailcow/clamd:1.43)