Describe the feature

CloudFormation has added applyImmediately feature to RDS instance.
This allows to schedule modifications in the next scheduled maintenance window.

https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-rds-dbinstance.html#cfn-rds-dbinstance-applyimmediately
https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_ModifyInstance.ApplyImmediately.html

Use Case

We can avoid rebooting database instances during update.

Proposed Solution

Add applyImmediately in instance props.

Other Information

No response

Acknowledgements

• I may be able to implement this feature request
• This feature might incur a breaking change

CDK version used

2.178.2

Environment details (OS name and version, etc.)

Linux