Prepare 2.21.0 (#20961) #216

Job	Run time
Create draft release and output info	3s
Create draft release and output info	3s
Build wheels (macOS10-15-x86_64)	18m 54s
Build wheels (macOS10-15-x86_64)	18m 54s
Build wheels (macOS11-ARM64)	10m 33s
Build wheels (macOS11-ARM64)	10m 33s
Build wheels (Linux-ARM64)	18m 29s
Build wheels (Linux-ARM64)	18m 29s
Build wheels (Linux-x86_64)	13m 25s
Build wheels (Linux-x86_64)	13m 25s
publish	4m 11s
publish	8m 53s
	2h 15m 52s

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