For anyone using Amazon AWS SMS please refer this link https://repost.aws/questions/QU4hNT5ZjeRYC_pm_6P7yLxw/certificate-authority-ca-for-apple-push-notification-apn-is-changing?utm_source=chatgpt.com
Summary : If you're using AWS SNS for push notifications, no direct action is likely needed — AWS automatically manages certificates and trust stores.