Preparations for 0.30.7 release #2170

Job	Run time
Make SDist	23s
build (macos-14, macosx, macos_arm64, arm64)	1h 55m 24s
build (ubuntu-latest, manylinux, manylinux)	1h 44m 1s
build (ubuntu-24.04-arm, manylinux, aarch64)	2h 36m 3s
build (ubuntu-latest, musllinux, musllinux)	1h 48m 8s
build (macos-15-intel, macosx, macos_x86_64, x86_64)	3h 30m 42s
upload_to_test_pypy	31s
upload_to_pypi	0s
	11h 35m 12s

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