Fix up CI after Fedora + black upgrades
- Black changed, and wants more pettings ( I mean, newlines )
- Merge in a lint shutup for pylint
- Move from debian11 to debian12 in tests
- Fix dep changes for pysnmp/libpysnmp in test requirements
- Add a backport of asyncore to python newer than 3.12+
Edited by Spindel 🕷 Ljungmark