Add Free Threading in pyproject.toml #66

Job	Run time
windows (windows-11-arm, aarch64, arm64)	2m 7s
macos (macos-15-intel, x86_64)	1m 33s
windows (windows-latest, x64, x64)	2m 51s
macos (macos-latest, aarch64)	1m 4s
linux (ubuntu-22.04, ppc64le)	4m 21s
musllinux (ubuntu-22.04, armv7)	2m 35s
windows (windows-latest, x86, x86)	2m 9s
linux (ubuntu-22.04, s390x)	4m 35s
linux (ubuntu-22.04, aarch64)	4m 49s
sdist	11s
linux (ubuntu-22.04, armv7)	4m 12s
linux (ubuntu-22.04, x86)	2m 11s
linux (ubuntu-22.04, x86_64)	1m 42s
musllinux (ubuntu-22.04, x86)	1m 32s
musllinux (ubuntu-22.04, aarch64)	2m 39s
musllinux (ubuntu-22.04, x86_64)	2m 0s
Release	0s
	40m 31s

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