Update after NumPy 2.0+ removal of ndarray.newbyteorder

[dalcinl]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.67%. Comparing base (8a476cb) to head (e380f58).
Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #55      +/-   ##
==========================================
- Coverage   76.72%   76.67%   -0.06%     
==========================================
  Files          16       16              
  Lines        3532     3532              
  Branches      554      465      -89     
==========================================
- Hits         2710     2708       -2     
- Misses        664      666       +2     
  Partials      158      158              

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[dalcinl]

@mengaldo @mrogowski Looks like MPI tests have been broken for quite some time, mostly related to issues with dependencies. This PR handles only things related to changes in NumPy. I'll merge it as-is, but other things will still leave CI in a broken state.

[mrogowski]

Thanks @dalcinl! I'll try to take a look this week.