Leftover packages from older RHUI versions

Red Hat Update Infrastructure (RHUI) 4 has used several versions of Pulp since its initial release in December 2020. These Pulp versions have used various Python versions: 3.6, 3.8, 3.9, and 3.11. Because Pulp uses libraries to function properly and these libraries must be usable by the same Python version that Pulp uses, the corresponding RPMs had to be built for the specific Python version, ...