remove 's lifetime from validate and validate_assignment

[davidhewitt]

Change Summary

As far as I can tell, not necessary and just increases cognitive load :)

Related issue number

N/A

Checklist

• Unit tests for the changes exist
• Documentation reflects the changes where applicable
• Pydantic tests pass with this pydantic-core (except for expected changes)
• My PR is ready to review, please add a comment including the phrase "please review" to assign reviewers

Selected Reviewer: @adriangb

[davidhewitt]

please review

[codecov]

Codecov Report

Merging #890 (94ff004) into main (2e59f25) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #890      +/-   ##
==========================================
- Coverage   93.79%   93.78%   -0.01%     
==========================================
  Files         105      105              
  Lines       15252    15249       -3     
  Branches       25       25              
==========================================
- Hits        14305    14302       -3     
  Misses        941      941              
  Partials        6        6              

Files Changed	Coverage Δ
src/validators/is_subclass.rs	80.95% <ø> (ø)
src/validators/literal.rs	92.80% <ø> (ø)
src/validators/any.rs	100.00% <100.00%> (ø)
src/validators/arguments.rs	100.00% <100.00%> (ø)
src/validators/bool.rs	100.00% <100.00%> (ø)
src/validators/bytes.rs	91.11% <100.00%> (ø)
src/validators/call.rs	93.93% <100.00%> (ø)
src/validators/callable.rs	100.00% <100.00%> (ø)
src/validators/chain.rs	84.12% <100.00%> (ø)
src/validators/custom_error.rs	87.32% <100.00%> (ø)
... and 31 more

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[codspeed-hq]

CodSpeed Performance Report

Merging #890 will not alter performance

_{Comparing dh/remove-lifetimes (94ff004) with main (2e59f25)}

Summary

✅ 138 untouched benchmarks