Changes for Zammad 7.0

[mgruner]

PR: #530

• Add support for restore mode #491
• add support for Redis Sentinel variables (Add support for Redis Sentinel variables #510)
• No change needed for Docker stack cannot run Rails without using the docker entrypoint zammad#5685
• Switch to Elasticsearch 9 and Redis 8
• RAILS_TRUSTED_PROXIES now supports hostnames. Automatically configure it for the nginx-proxy-manager scenario.

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity.
It will be closed if no further activity occurs. Thank you for your contributions.

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity.
It will be closed if no further activity occurs. Thank you for your contributions.

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity.
It will be closed if no further activity occurs. Thank you for your contributions.

[mgruner]

All changes were transferred to / implemented in #530, closing this item.