chore(formatting): switch to ruff

[wpbonelli]

• follow chore: switch to ruff, numpy compat fixes, ignore known test warnings modflowpy/flopy#2124
• ran ruff check --select NPY201 and all looks good

[codecov]

Codecov Report

Attention: Patch coverage is 33.33333% with 14 lines in your changes are missing coverage. Please review.

Project coverage is 75.70%. Comparing base (6287368) to head (d3dce8b).

Files	Patch %	Lines
pywatershed/analysis/model_graph.py	0.00%	11 Missing ⚠️
pywatershed/utils/csv_utils.py	0.00%	1 Missing ⚠️
pywatershed/utils/prms5_file_util.py	0.00%	1 Missing ⚠️
pywatershed/utils/prms5util.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #287      +/-   ##
===========================================
+ Coverage    75.68%   75.70%   +0.02%     
===========================================
  Files           50       50              
  Lines         6638     6644       +6     
===========================================
+ Hits          5024     5030       +6     
  Misses        1614     1614              

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