Drop support for Python versions < 3.9 #3583
Description
Supporting very old Python versions has become a maintenance burden (dependencies, code workarounds etc.). The default Python version in the current LTS major Linux distros are the following:
- Ubuntu 22.04: Python 3.10
- RHEL 9: Python 3.9
- SLES 15: Python 3.6 (but offers packages for newer versions).
Supporting at least 3.9 covers fully the two most widely used distros and as for SLES15 users would have to use a non-default Python.