I recived this message from developer@insideapple.apple.com
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Hello,
We’re reaching out with a final reminder that the Certification Authority (CA) for Apple Push Notification service (APNs) is changing. APNs updated the server certificates in sandbox on January 21, 2025. APNs production server certificates will be updated on February 24, 2025. To continue using APNs without interruption, you’ll need to update your application’s Trust Store to include the new server certificate: SHA-2 Root: USERTrust RSA Certification Authority certificate.
To ensure a smooth transition and avoid push notification delivery failures, please make sure that both old and new server certificates are included in the Trust Store before the cut-off date for each of your application servers that connect to sandbox and production. At this time, you don’t need to update the APNs SSL provider certificates issued to you by Apple.
If you have any questions, please contact us.
The Apple Developer Relations Team
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Do you know what we need to do?
Please have a look at this stack overflow discussion @ https://stackoverflow.com/questions/79257691/apple-push-notification-service-server-certificate-update-2025
As per this this discussion "This certificate update is only needed for developers who are running their own push servers to directly communicate with APNs. 3rd party push providers will need to handle this certificate update on their end."
I believe you are using the 'Cloud Messaging Plugin (Firebase),' and you may not need to take any action. Let's wait for other members to share their experiences if they have faced similar issues.