fix: clippy warnings

[zeitgeist]

No description provided.

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 50.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 80.72%. Comparing base (7db7f3e) to head (7d15e80).

Files with missing lines	Patch %	Lines
tandem_http_client/src/lib.rs	0.00%	1 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main     #258      +/-   ##
==========================================
+ Coverage   80.52%   80.72%   +0.19%     
==========================================
  Files          23       23              
  Lines        1725     1722       -3     
==========================================
+ Hits         1389     1390       +1     
+ Misses        336      332       -4     

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[zeitgeist]

Once this PR is merged in, rebased dependabot PRs should build again.