Changes in 6.6.1

Summary

Bugfix - Fix panic when stopping the nats: #10363
The nats server itself runs signal handling that the Shutdown() call in the ocis
code is redundant and led to a panic.
#10360
#10363
Bugfix - Disable download activity: #10368
We disable the download activity until we have a proper solution for it.
#10293
#10368
Bugfix - Fix Activitylog issues: #10376
Fixes multiple activititylog issues. There was an error about max payload exceeded when there were too many activities on one folder. Listing would take
very long even with a limit activated. All of these issues are now fixed.
#10376
Bugfix - Security fixes: #10376
We polished some of the sonarcloud issues.
#10376
Bugfix - Make antivirus workers configurable: #10383
We made the number of go routines that pull events from the queue configurable.
#10383
Bugfix - Increase event processing workers: #10385
We increased the number of go routines that pull events from the queue to three
and made the number off workers configurable. Furthermore, the postprocessing
delay no longer introduces a sleep that slows down pulling of events, but
asynchronously triggers the next step.
#10385
#10368
Bugfix - Fix envvar deprecations for next production release: #10386
Some envvar deprecations were incomplete. One was missed to be removed, one had
missing information.
#10386
Bugfix - Fix healthchecks: #10405
We needed to replace 0.0.0.0 bind addresses by outbound IP addresses in the
healthcheck routine.
#10405