Bump pyo3 from 0.21.0 to 0.21.1 #137

Job	Run time
macos	2m 13s
linux (x86_64)	1m 13s
musllinux (x86_64-unknown-linux-musl)	1m 13s
linux-cross (aarch64)	3m 55s
linux (i686)	1m 41s
musllinux (i686-unknown-linux-musl)	54s
musllinux-cross (aarch64-unknown-linux-musl, aarch64)	1m 49s
linux-cross (armv7)	3m 44s
windows (x64)	1m 9s
musllinux-cross (armv7-unknown-linux-musleabihf, armv7)	1m 47s
linux-cross (s390x)	3m 30s
windows (x86)	1m 30s
linux-cross (ppc64le)	3m 42s
linux-cross (ppc64)	1m 53s
Release	0s
	30m 13s

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