add np 2.0 deprecation

[lukeolson]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 82.13%. Comparing base (e1fe54c) to head (981247c).

Files	Patch %	Lines
pyamg/strength.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #407      +/-   ##
==========================================
- Coverage   82.14%   82.13%   -0.01%     
==========================================
  Files          83       83              
  Lines       12485    12485              
  Branches     1895     1894       -1     
==========================================
- Hits        10256    10255       -1     
- Misses       1634     1635       +1     
  Partials      595      595              

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