The Quick Docs for PostgreSQL upgrades on Fedora upgrade assume that no PostgreSQL versions are skipped - apparently it is not possible to migrate databases from v16 to v18, which is what happens when users upgrade from Fedora 42 to 43. This needs more steps than just "run the migration program". Looks like this was missed in the Fedora 43 Change Proposal for PostgreSQL 18, and it's not covered by the Quick Docs. Would be great if that could be changed.

see also https://discussion.fedoraproject.org/t/cant-upgrade-postgres-after-f42-f43