Add permissions to on-call endpoints

[api-clients-generation-pipeline]

See DataDog/datadog-api-spec#3860
Test branch datadog-api-spec/test/sync-forwarder-specs-DataDog-dd-source-d.marin-v2/a93c34a4d6111dbf3ff89b9195ee7a26

[datadog-datadog-prod-us1]

Datadog Report

Branch report: datadog-api-spec/generated/3860
Commit report: e59db31
Test service: datadog-api-client-ruby

✅ 0 Failed, 1127 Passed, 2137 Skipped, 2m 0.6s Total duration (1m 14.85s time saved)

[NaOHman]

/merge

[dd-devflow]

View all feedbacks in Devflow UI.

2025-05-09 13:48:35 UTC ℹ️ Start processing command /merge

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2025-05-09 13:48:41 UTC ℹ️ MergeQueue: waiting for PR to be ready

This merge request is not mergeable yet, because of pending checks/missing approvals. It will be added to the queue as soon as checks pass and/or get approvals.
Note: if you pushed new commits since the last approval, you may need additional approval.
You can remove it from the waiting list with /remove command.

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2025-05-09 14:10:08 UTC ℹ️ MergeQueue: merge request added to the queue

The expected merge time in master is approximately 0s (p90).

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2025-05-09 14:42:26 UTC ❌ MergeQueue: This merge request was updated

This PR is rejected because it was updated