add support for free-threaded wheels #1538

Job	Run time
Python 3.8 on macos-13	1m 0s
tests on alpine	1m 8s
Python 3.8 on macos-latest	1m 24s
3.13 on linux, Rust stable	37s
tests on alpine:aarch64	1m 11s
Python 3.13 on macos-13	1m 19s
3.13 on linux, Rust stable	49s
tests on ubuntu-rolling:aarch64	1m 6s
Python 3.8 on win32	1m 55s
Python 3.13 on macos-latest	45s
3.8 on linux, Rust stable	55s
Python 3.13 on win32	3m 4s
Python 3.13t on macos-13	2m 4s
3.9 on linux, Rust stable	54s
Python 3.13t on win32	2m 11s
Python 3.13t on macos-latest	1m 23s
Python 3.8 on win64	2m 54s
3.10 on linux, Rust stable	55s
Python 3.13 on win64	2m 33s
3.11 on linux, Rust stable	54s
Python 3.13t on win64	2m 39s
3.12 on linux, Rust stable	59s
3.13 on linux, Rust stable	1m 0s
3.13t on linux, Rust stable	1m 0s
pypy-3.9 on linux, Rust stable	1m 4s
pypy-3.10 on linux, Rust stable	1m 12s
3.13 on linux, Rust 1.64.0	2m 28s
3.13 on linux, Rust beta	59s
3.13 on linux, Rust nightly	58s
all-green	2s
	41m 22s

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