chore(deps): bump go.opentelemetry.io/otel/sdk from 1.21.0 to 1.29.0 #1962

Job	Run time
Run tests	3m 3s
Run lints and checks	4m 9s
Run buf actions	1m 15s
Run race tests	2m 1s
Generate SDKs	3m 14s
Build CLI docs	53s
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 35s

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