Apple has announced the update of their endpoints

[trongnghia203]

Reference: https://developer.apple.com/documentation/usernotifications/setting_up_a_remote_notification_server/sending_notification_requests_to_apns

Per the article, shall we need to adjust the code?

1. Use HTTP/2 and TLS 1.2 or later to establish a connection between your provider server and one of the following servers:

Development server: api.sandbox.push.apple.com:443
Production server: api.push.apple.com:443