Adds BackupRetentionPeriod to RDS spec#50

Merged

willdavsmith merged 4 commits intoradius-project:mainfrom willdavsmith:willdavsmith/rds-backup

Jan 10, 2024

+6

Commits on Dec 13, 2023

Commits on Jan 10, 2024

Adding min and max value
willdavsmith
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