docs(rds): change default value for deleteAutomatedBackups from false to true

[tam0ri]

Currently, the default value for deleteAutomatedBackups prop is described as false in CDK document.
https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_rds.DatabaseInstance.html#deleteautomatedbackups

However, from underlying CloudFormation resource and RDS API perspective, true is correct default value.

https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-rds-dbinstance.html#cfn-rds-dbinstance-deleteautomatedbackups

A value that indicates whether to remove automated backups immediately after the DB instance is deleted. This parameter isn't case-sensitive. The default is to remove automated backups immediately after the DB instance is deleted.

https://docs.aws.amazon.com/AmazonRDS/latest/APIReference/API_DeleteDBInstance.html

Specifies whether to remove automated backups immediately after the DB instance is deleted. This parameter isn't case-sensitive. The default is to remove automated backups immediately after the DB instance is deleted.

Also, From CDK implementation perspective, deleteAutomatedBackups prop is simply passed to deleteAutomatedBackups parameter for CfnDBInstance (AWS::RDS::DBInstance).

aws-cdk/packages/aws-cdk-lib/aws-rds/lib/instance.ts

Line 856 in 5665a95

deleteAutomatedBackups: props.deleteAutomatedBackups,

This PR solves this discrepancy between the documentation for RDS DB Instances in CDK and CFn.

Closes #27973

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[aws-cdk-automation]

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[lpizzinidev]

Thanks 👍

[mergify]

Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).