Add Numpy 2.x compatibility

[felixriese]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 88.95%. Comparing base (10eff86) to head (0691cdb).
Report is 1 commits behind head on main.

Files	Patch %	Lines
susi/SOMPlots.py	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #49      +/-   ##
==========================================
+ Coverage   87.94%   88.95%   +1.00%     
==========================================
  Files           7        7              
  Lines         531      525       -6     
==========================================
  Hits          467      467              
+ Misses         64       58       -6     

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