Foreman upgrade (3.5) question : postgresql-evr mandatory?

Upgrade documentation Upgrading and Updating Foreman
Says we have to install postgresql-evr when external database is installed.
That is my case but I don’t use katello and postgresql-evr is not available in the foreman repo.

Foreman and Proxy versions:
Foreman and Proxy plugin versions:

Distribution and version:
RHEL 8 7/ Foreman 3.3.1


It is only required for Katello, so should only be generated in these docs and not the Foreman ones.

This is already mentioned as an issue in Make External DB support available in foreman-{deb,el} · Issue #985 · theforeman/foreman-documentation · GitHub

Thank you