The unit tests in test-kubevirt-core are failing, because a newer python version is required by the ansible unit testing framework.
The code uses the union operator (|) for type hinting (e.g., str | None), which requires Python 3.10+. The test runner is using Python 3.9.

If adjusting the python version requires some effort, 
https://access.redhat.com/support/policy/updates/rhel-app-streams-life-cycle
https://access.redhat.com/support/policy/updates/ansible-automation-platform

looks like python 3.12 is available from RHEL 8 to 10 and compatible with many ansible versions.