Test upgrading to PostgreSQL 14 with the GitLab chart
Summary
PostgreSQL 14 is being added to Omnibus and the PostgreSQL 14 libraries were added to the CNG images.
Although we recommend that GitLab chart installs use an external Postgres database, we do include Postgres with the chart install for testing purposes. We should ensure that chart upgrades work correctly when they involve an upgrade to PG14.
Proposal
Test upgrading GitLab with the helm chart to validate if Postgres can be successfully upgraded to PG14. If problems are identified during this test, create separate issues to address the problems.
Issue used when adding PG 13: #2709 (closed)