Currently the enrichment jobs run on Flink 1.20.1 and Java 11. This is the last docker image available that has Java 11. An upgrade to Flink 1.20.3 requires Java 17.
Simply bumping the image isn't enough since the distro in the latest images trigger PEP 668 - Marking Python base environments as "externally managed". This breaks our build step. (I think?) the way to fix this is to update Blubber and use its new use-system-site-packages option, but that is blocked because of T406872