Use PEP570 syntax

[Viicos]

Change Summary

Related issue number

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

[davidhewitt]

Thanks! 🚀

[codecov]

Codecov Report

Merging #1216 (9a83305) into main (ab503cb) will increase coverage by 0.01%.
Report is 26 commits behind head on main.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1216      +/-   ##
==========================================
+ Coverage   90.21%   90.22%   +0.01%     
==========================================
  Files         106      106              
  Lines       16339    16373      +34     
  Branches       36       39       +3     
==========================================
+ Hits        14740    14773      +33     
+ Misses       1592     1581      -11     
- Partials        7       19      +12     

Files	Coverage Δ
python/pydantic_core/core_schema.py	94.69% <ø> (-0.08%)	⬇️

... and 5 files with indirect coverage changes

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[codspeed-hq]

CodSpeed Performance Report

Merging #1216 will not alter performance

_{Comparing Viicos:pep-570 (9a83305) with main (a98b8b0)}

Summary

✅ 148 untouched benchmarks