Prepare 2.21.2rc2 #24443

Job	Run time
Classify changes	3s
Ensure PR has a category label	2s
Bootstrap Pants, test Rust (macOS12-x86_64)	14m 8s
Bootstrap Pants, test Rust (Linux-ARM64)	18m 1s
Bootstrap Pants, test and lint Rust (Linux-x86_64)	11m 5s
Build wheels (Linux-x86_64)	15m 55s
Build wheels (Linux-ARM64)	26m 2s
Build wheels (macOS10-15-x86_64)	21m 21s
Build wheels (macOS11-ARM64)	11m 57s
Lint Python and Shell	3m 44s
Test Python (Linux-x86_64) Shard 1/10	16m 20s
Test Python (Linux-x86_64) Shard 0/10	18m 8s
Test Python (Linux-x86_64) Shard 2/10	17m 57s
Test Python (Linux-x86_64) Shard 3/10	15m 13s
Test Python (Linux-x86_64) Shard 4/10	25m 58s
Test Python (Linux-x86_64) Shard 5/10	12m 41s
Test Python (Linux-x86_64) Shard 6/10	10m 22s
Test Python (Linux-x86_64) Shard 7/10	15m 34s
Test Python (Linux-x86_64) Shard 8/10	14m 20s
Test Python (Linux-x86_64) Shard 9/10	11m 49s
Test Python (macOS12-x86_64)	7m 33s
Test Python (Linux-ARM64)	6m 25s
Set Merge OK	1s
Merge OK	1s
	4h 54m 40s

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