PostgreSQL upgrade
You are currently running PostgreSQL 12.
Note that PostgreSQL 13 will become the minimum required PostgreSQL version in GitLab 16.0 (May 2023).
PostgreSQL 12 will be removed in GitLab 16.0. Please consider upgrading your PostgreSQL version soon.
To upgrade, please see: https://docs.gitlab.com/omnibus/settings/database.html#upgrade-packaged-postgresql-server