Bump version to 3.0.0b1 #27

Job	Run time
build_sdist	14s
Build on linux (x86_64 - auto)	3m 35s
Build on linux (aarch64 - auto)	3m 50s
Build on macos (x86_64 - auto)	4m 52s
Build on macos (aarch64 - auto)	4m 23s
Build on windows (x86_64 - auto)	5m 20s
Build on windows (aarch64 - auto)	6m 51s
Build on linux (x86_64 - musllinux_1_1)	3m 4s
Build on linux (aarch64 - musllinux_1_1)	3m 43s
Build on linux (ppc64le - auto)	2m 59s
Build on linux (s390x - auto)	3m 27s
Release	5m 22s
	47m 40s

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