Build fails while trying to delete "Default Subnet" from default vpc

Describe the bug 377 | 2023-07-20 02:14:25.258 | error | toolkit | Stack Deployments Failed: Error: The stack named AWSAccelerator-NetworkVpcStack-916366982292-us-west-2 failed to deploy: UPDATE_ROLLBACK_COMPLETE: Received response status [FAILED] from custom resource. Message returned: DependencyViolation: The subnet 'subnet-05ea80822a773ea9f' has dependencies and cannot be deleted.

To Reproduce I am running the following and my build fails with above error. I can not even manually delete the subnet, https://github.com/awslabs/landing-zone-accelerator-on-aws/tree/main/reference/sample-configurations/aws-best-practices-healthcare

Expected behavior Either of following

This code is creating its own vpc, it should not have any dependency on default vpc

Please complete the following information about the solution:

[ ] Version: [e.g. v1.1.0]

To get the version of the solution, you can look at the description of the created CloudFormation stack. For example, "(SO0021) - Video On Demand workflow with AWS Step Functions, MediaConvert, MediaPackage, S3, CloudFront and DynamoDB. Version v5.0.0". If the description does not contain the version information, you can look at the mappings section of the template:

Mappings:
  SourceCode:
    General:
      S3Bucket: "solutions"
      KeyPrefix: "video-on-demand-on-aws/v5.0.0"

[ ] Region: us-west-2
[ ] Was the solution modified from the version published on this repository? - yes with only my account numbers for organization-config.yaml
[ ] If the answer to the previous question was yes, are the changes available on GitHub?
[ ] Have you checked your service quotas for the sevices this solution uses?
[ ] Were there any errors in the CloudWatch Logs?

Screenshots If applicable, add screenshots to help explain your problem (please DO NOT include sensitive information).

Additional context Add any other context about the problem here.

awslabs / landing-zone-accelerator-on-aws

Build fails while trying to delete "Default Subnet" from default vpc #212