Suppress superfluous warnings from numpy

[dstrain115]

• On MacOS, with numpy ~1.26, np.linalg.det gives spurious warnings when passed a complex array.
• Suppress these warnings, as they are just annoying and do not signify anything.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 97.81%. Comparing base (2a907bf) to head (3905278).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #6599 +/- ## ========================================== - Coverage 97.81% 97.81% -0.01% ========================================== Files 1061 1061 Lines 91647 91656 +9 ========================================== + Hits 89648 89656 +8 - Misses 1999 2000 +1 ```

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