bump jiter to 0.9, pyo3 to 0.24

[davidhewitt]

Change Summary

The usual round of improvements, perhaps to be merged before releasing 2.11 beta.2 ?

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

[codspeed-hq]

CodSpeed Performance Report

Merging #1667 will improve performances by 37.77%

_{Comparing dh/pyo3-0.24 (6ee32eb) with main (d8be765)}

Summary

⚡ 1 improvements
✅ 156 untouched benchmarks

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
⚡	test_strict_union_error_core	45.1 µs	32.8 µs	+37.77%

[davidhewitt]

Looks like this is overall fine, moderate perf bumps in some areas and a little perf loss in core_json_fs benchmark. I think that can be compensated for by #1620 in the future.

[davidhewitt]

(This test_strict_union_error_core stat looks meaningless, for some reason it had a bad run on main and I think would show on all PRs.)