working out testing failures

[jGaboardi]

I am working through getting tests back running again through GHA over in my fork.

• Seeing some intermittent failures, maybe due to randomness on macOS and Windows:
  • test_universal.py::TestUniversal::test_Lenormand
    • failed here; passed here
  • test_universal.py::TestUniversal::test_Radiation
    • failed here; skipped here (not sure if actually ever passed)
• doctests or no doctests?
  • If we want to run the doctests, then some adjustments need to be made with:
    • intermittent rounding diffs
    • supported libpysal version (due to printing returns)

xref: #38