Adding validation for Output values from nested stacks

[jaehyi-aws]

Is this feature request related to a new rule or cfn-lint capabilities?

No response

Describe the feature you'd like to request

Enable cfn-lint to validate Output values from nested stacks

Describe the solution you'd like

For example, I would like cfn-lint to validate whether BucketName from the nested stack is in the Outputs section of the template

BucketName:
    Description: Bucket Name
    Value: !GetAtt NestedStack.Outputs.BucketName

Additional context

No response

Is this something that you'd be interested in working on?

• 👋 I may be able to implement this feature request

Would this feature include a breaking change?

• ⚠️ This feature might incur a breaking change