clippy on rust update

[louisfd]

Seems Clippy was unhappy after a rust update on the CI

[codecov]

Codecov Report

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

Project coverage is 86.14%. Comparing base (71bd5ef) to head (ae383d1).
Report is 1 commits behind head on main.

Files	Patch %	Lines
crates/burn-ndarray/src/element.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1886      +/-   ##
==========================================
- Coverage   86.14%   86.14%   -0.01%     
==========================================
  Files         778      778              
  Lines       90780    90786       +6     
==========================================
+ Hits        78202    78205       +3     
- Misses      12578    12581       +3     

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