Fix clippy warnings in tests

[cakebaker]

This PR fixes warnings from the needless_borrows_for_generic_args lint.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.12%. Comparing base (6ec8370) to head (2a899a9).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #84   +/-   ##
=======================================
  Coverage   81.12%   81.12%           
=======================================
  Files          10       10           
  Lines        4227     4227           
  Branches      403      403           
=======================================
  Hits         3429     3429           
  Misses        778      778           
  Partials       20       20           

Flag	Coverage Δ
macos_latest	81.23% <100.00%> (ø)
ubuntu_latest	81.42% <100.00%> (ø)
windows_latest	20.41% <0.00%> (ø)

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