Apply clippy fixes for Rust 1.90

[hansl]

This fixes all build and lint issues with Rust 1.90.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 51.22%. Comparing base (6ddc2b4) to head (30ef1be).
⚠️ Report is 529 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4423      +/-   ##
==========================================
+ Coverage   47.24%   51.22%   +3.97%     
==========================================
  Files         476      502      +26     
  Lines       46892    51302    +4410     
==========================================
+ Hits        22154    26277    +4123     
- Misses      24738    25025     +287     

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