[FCM] the legacy Firebase Cloud Messaging (FCM) APIs 廃止予定のお知らせAndroidFCM 先日、とあるプロジェクトにてGoogleから以下のようなメールが届きました。 We’re writing to let you know that starting June 20, 2024 the legacy Firebase Cloud Messaging (FCM) APIs will be discontinued. Your Firebase project(s) that use Firebase Cloud Messaging APIs are listed below: project_name (project_id) 1. Your recent usage of impacted APIs/features: Serve