STY: Run ruff at the source root

[oesteban]

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[codecov]

Codecov Report

❌ Patch coverage is 88.00000% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 95.10%. Comparing base (11b08d5) to head (3fe53f9).
⚠️ Report is 4 commits behind head on master.

Files with missing lines	Patch %	Lines
nitransforms/surface.py	87.80%	5 Missing ⚠️
nitransforms/io/fsl.py	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #273      +/-   ##
==========================================
+ Coverage   95.08%   95.10%   +0.02%     
==========================================
  Files          16       16              
  Lines        1972     1982      +10     
  Branches      221      265      +44     
==========================================
+ Hits         1875     1885      +10     
  Misses         76       76              
  Partials       21       21              

Flag	Coverage Δ
unittests	95.08% <88.00%> (ø)

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