chore(deps): bump alpine from 3.21.0 to 3.21.1 in /.docker #2182

Job	Run time
Run buf actions	1m 20s
Run tests	3m 19s
Run race tests	2m 52s
Run lints and checks	2m 29s
Generate SDKs	3m 26s
Build CLI docs	1m 0s
Generate changelog	0s
Generate release	0s
Render version schema	0s
Draft newsletter	0s
Pending approval Slack notification	0s
Send newsletter	0s
Release SDKs	0s
	14m 26s

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