Cloud SQL enhanced backups are now generally available (GA)

## Feature Feature Cloud SQL enhanced backups are now generally available ([GA](https://cloud.google.com/products#product-launch-stages)). With enhanced backups, backups are managed and stored in a centralized backup management project that leverages the[Backup and DR service](https://docs.cloud.google.com/backup-disaster-recovery), and provides enforced retention, granular scheduling, and longer retention. Enhanced backups now also support[point-in-time-recovery (PITR) after instance deletion](https://docs.cloud.google.com/sql/docs/mysql/backup-recovery/restore). For more information about the available options and their limitations, see[Backup options](https://docs.cloud.google.com/sql/docs/mysql/backup-recovery/backup-options). For more information about enhanced backups pricing, see[Backup and DR pricing](https://cloud.google.com/backup-disaster-recovery/pricing).