Minor format fix to make new ruff 0.16.0 happy

[brews]

Gotta keep ruff happy.

See #316

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.59%. Comparing base (9100f14) to head (a6ad6f9).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #317   +/-   ##
=======================================
  Coverage   80.59%   80.59%           
=======================================
  Files           5        5           
  Lines          67       67           
=======================================
  Hits           54       54           
  Misses         13       13           

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