Update spotless packages to v8.9.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
com.diffplug.spotless:spotless-plugin-gradle	8.8.0 → 8.9.0
com.diffplug.spotless	8.8.0 → 8.9.0

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.46%. Comparing base (ff91c02) to head (16b0fae).

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #8663      +/-   ##
============================================
- Coverage     91.46%   91.46%   -0.01%     
- Complexity    10456    10457       +1     
============================================
  Files          1021     1021              
  Lines         27647    27647              
  Branches       3242     3242              
============================================
- Hits          25288    25286       -2     
- Misses         1616     1617       +1     
- Partials        743      744       +1     

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