update to PyO3 0.29

[davidhewitt]

Routine update to the new PyO3 release.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

📢 Thoughts on this report? Let us know!

[codspeed-hq]

Merging this PR will improve performance by 11.41%

⚠️ Different runtime environments detected

Some benchmarks with significant performance changes were compared across different runtime environments,
which may affect the accuracy of the results.

Open the report in CodSpeed to investigate

⚡ 1 improved benchmark
✅ 69 untouched benchmarks

Performance Changes

	Benchmark	BASE	HEAD	Efficiency
⚡	pass2_jiter_value	19.4 µs	17.4 µs	+11.41%

Tip

Curious why this is faster? Comment @codspeedbot explain why this is faster on this PR, or directly use the CodSpeed MCP with your agent.

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_{Comparing dh/pyo3-0.29 (56641b9) with main (0bb22aa)¹}

Footnotes

1. No successful run was found on main (1429532) during the generation of this report, so 0bb22aa was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩

[Viicos]

Dropped 3.13t in #255.