I should have opened this before adding a release note in the Foreman 3.13 release.
This is a formal RFC for dropping support to run Foreman on Debian 11. Debian 11 went LTS back in August and that means not everything is fully supported anymore. Users can upgrade to the fully supported Debian 12 packages.
After dropping Debian 11, we no longer have any platform that runs Ruby 2.7 or NodeJS 14. Removing those will also reduce our testing matrix.