update ruff to 0.16

[methane]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 92.30769% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 90.56%. Comparing base (e2a908b) to head (60c45a8).
⚠️ Report is 48 commits behind head on main.

Files with missing lines	Patch %	Lines
src/MySQLdb/__init__.py	66.66%	1 Missing ⚠️

Additional details and impacted files

@@ Coverage Diff @@## main #794 +/- ##
==========================================
+ Coverage 88.86% 90.56% +1.69% 
==========================================
Files 7 7 Lines 548 551 +3 ==========================================
+ Hits 487 499 +12 + Misses 61 52 -9 

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