Try fix CI for python 3.12 and numpy-2 experimental

[adybbroe]

Install latest bleeding edge versions of Numpy and Pandas for the Python 3.12 experimental CI

• Closes #xxxx
• Tests added
• Tests passed: Passes pytest pyspectral
• Passes flake8 pyspectral
• Fully documented
• Add your name to AUTHORS.md if not there already

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.00%. Comparing base (0dd125a) to head (4736bc2).
Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #218   +/-   ##
=======================================
  Coverage   90.00%   90.00%           
=======================================
  Files          23       23           
  Lines        2571     2571           
=======================================
  Hits         2314     2314           
  Misses        257      257           

Flag	Coverage Δ
unittests	90.00% <ø> (ø)

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