update clippy linting

[danieleades]

this is stacked on #242

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 78.70%. Comparing base (8ca80dd) to head (e06183a).
⚠️ Report is 37 commits behind head on main.

Additional details and impacted files

@@ Coverage Diff @@## main #243 +/- ##
==========================================
+ Coverage 78.60% 78.70% +0.09% 
==========================================
Files 18 18 Lines 589 587 -2 ==========================================
- Hits 463 462 -1 + Misses 126 125 -1 

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