{RDBMS} az postgres flexible-server create, az postgres server, az postgres db, az postgres server-logs, az postgres flexible-server replica, postgres flexible-server db, az postgres flexible-server long-term-retention, az postgres flexible-server backup, postgres flexible-server firewall-rule, az postgres flexible-server migration: Add upcoming breaking change announcements

{RDBMS} az postgres flexible-server create, az postgres server, az postgres db, az postgres server-logs, az postgres flexible-server replica, postgres flexible-server db, az postgres flexible-server long-term-retention, az postgres flexible-server backup, postgres flexible-server firewall-rule, az postgres flexible-server migration: Add upcoming breaking change announcements #2891