Add free-threaded Python support #4263

Job	Run time
Lint	1m 5s
Build maturin	1m 33s
Test Alpine Linux	1m 57s
Check armv5te-unknown-linux-gnueabi	1m 15s
Test Bootstrap (ubuntu-latest)	8s
Test (ubuntu-latest, 3.9)	2m 8s
Test Bootstrap (macos-14)	10s
Test (ubuntu-latest, 3.13)	2m 10s
Test Bootstrap (windows-latest)	11s
Test (macos-13, 3.9)	2m 8s
Test Docker	1m 58s
Test (macos-13, 3.13)	2m 6s
Test (macos-13, pypy3.10)	2m 8s
Test (macos-14, 3.13)	2m 10s
Test MSRV	1m 43s
Test Emscripten	2m 8s
Test (windows-latest, 3.9)	1m 55s
Test (windows-latest, 3.13)	1m 53s
Test downstream - ${{ matrix.downstream.repository }}	0s
Test (windows-latest, pypy3.10)	1m 55s
Test Auditwheel (manylinux_2_28)	17s
Test Cross Compile (aarch64-unknown-linux-gnu, cp39-cp39, python3.9, ghcr.io/rust-cross/manylinux...	17s
Test windows cross	25s
Test Cross Compile (armv7-unknown-linux-gnueabihf, cp39-cp39, python3.9, ghcr.io/rust-cross/manyl...	17s
Test Cross Compile (s390x-unknown-linux-gnu, cp310-cp310, python3.10, ghcr.io/rust-cross/manylinu...	17s
Test Cross Compile (aarch64-unknown-linux-gnu, pp310-pypy310_pp73, pypy3.10, ghcr.io/rust-cross/m...	17s
conclusion	1s
	32m 32s

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