Reduce size of Horreum base image

[johnaohara]

Describe the bug

After merging changes to the Horreum base image: https://github.com/Hyperfoil/Horreum/pull/1648

This installs python packages that are included in the python UBI image: https://catalog.redhat.com/software/containers/ubi9/python-39/61a61032bfd4a5234d59629e?tag=all&architecture=amd64&image=6628f55c4608ceb2c175adf8&container-tabs=dockerfile

The base image size has increased from 401MB -> 1.1GB

The base image should be reviews to see what can be pruned without affecting functionality