autogen: pin v0.12.0-alpha.0 release commit #1830

Job	Run time
Run lints and checks	1m 26s
Run tests	2m 52s
Run race tests	2m 1s
Run buf actions	1m 39s
Generate changelog	9s
Build CLI docs	53s
Generate SDKs	1m 2s
Generate release	17m 23s
Draft newsletter	40s
Release SDKs	1m 24s
Render version schema	12s
Pending approval Slack notification	2s
Send newsletter	1s
	29m 44s

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