[FIX] resolve numpy2 compatibility related to ambiguity when broadcasting in np.solve

[Remi-Gau]

• Closes numpy 2 test workflow failures #4309

Changes proposed in this pull request:

• implemented recommendations from https://numpy.org/devdocs/release/2.0.0-notes.html#removed-ambiguity-when-broadcasting-in-np-solve

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.15%. Comparing base (abb80ff) to head (2eeddc6).
Report is 43 commits behind head on main.

❗ Current head 2eeddc6 differs from pull request most recent head 2ecd9ff. Consider uploading reports for the commit 2ecd9ff to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4350      +/-   ##
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+ Coverage   91.85%   92.15%   +0.29%     
==========================================
  Files         144      143       -1     
  Lines       16419    16496      +77     
  Branches     3434     3463      +29     
==========================================
+ Hits        15082    15202     +120     
+ Misses        792      749      -43     
  Partials      545      545              

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[Remi-Gau]

The remaining failing test should be fixed by #4349.

[bthirion]

Numpy2 compatibility still breaks somewhere else...

[Remi-Gau]

OK this fail is related to some pandas 3.0 dependency...

[bthirion]

Do you want to address it ?

[Remi-Gau]

Sure but not in this PR.