Version 3.0.0 filters current Security Hub findings and retains alert delivery failures.
Callers enabling alarm_actions must supply delivery_failure with an owner, a distinct same-account SNS topic, and an HTTPS runbook.
Update configurations that enable alarm_actions to provide the required delivery_failure owner, same-account SNS topic, and HTTPS runbook before deploying version 3.0.0.
Validate the delivery_failure configuration for enabled alarm_actions, including the owner, same-account SNS topic, and HTTPS runbook, before deployment.