Merge branch 'stable-3.12'

* stable-3.12:
  Update base OS to AlmaLinux 9.3 and Java 17
  Get global-refdb.jar from Gerrit-CI
  Bump Gerrit to 3.9
  Add missing syslog-sidecar in docker-compose.yaml
  Removing obsolete version attribute in docker-compose.yaml
  Active/active setup using zookeeper-refdb plugin and zookeeper service

Change-Id: Ibe9e2dcf387705b3252c90916ab4285e0131dff6