build with numpy2

[m-reuter]

test automatic build with numpy2 (these will also be backward compatible)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 34.89%. Comparing base (2de1c3f) to head (e340bf7).
Report is 6 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #63      +/-   ##
==========================================
- Coverage   34.91%   34.89%   -0.02%     
==========================================
  Files          14       14              
  Lines        2366     2367       +1     
  Branches      297      299       +2     
==========================================
  Hits          826      826              
- Misses       1456     1457       +1     
  Partials       84       84              

Flag	Coverage Δ
unittests	34.89% <ø> (-0.02%)	⬇️

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