chore: fix some clippy lints

[tedil]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 70.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 86.31%. Comparing base (d59783c) to head (4becad7).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #184      +/-   ##
==========================================
- Coverage   86.32%   86.31%   -0.02%     
==========================================
  Files          18       18              
  Lines        7137     7139       +2     
==========================================
+ Hits         6161     6162       +1     
- Misses        976      977       +1     

Files	Coverage Δ
src/data/cdot/json.rs	89.59% <ø> (ø)
src/normalizer.rs	70.73% <100.00%> (ø)
src/parser/ds.rs	64.97% <50.00%> (-0.13%)	⬇️