Revert "test/default/serverspec: poetry with python3 - 20.04"
Revert "test/default/serverspec: poetry with python3 - 20.04"

This reverts commit 3a1c8e4f37f2570d0270d78ec2f9f5b982dcf2ad.

juju4/ansible-MISP,juju4/ansible-MISP,juju4/ansible-MISP