Cannot run stateless-synth if DefaultVPC does not exist

[alexiswl]

Apologies if this has already been resolved, I forked from main a while ago and will rebase before I make a PR, in the meantime I've just created a default vpc in the staging account.

yarn cdk-stateless synth

Gives

[Error at /OrcaBusStatelessPipeline/OrcaBusGamma/FastqManagerStack] Could not find any VPCs matching {"account":"455634345446","region":"ap-southeast-2","filter":{"isDefault":"true"},"returnAsymmetricSubnets":true,"lookupRoleArn":"arn:aws:iam::455634345446:role/cdk-hnb659fds-lookup-role-455634345446-ap-southeast-2"}
Found errors

[victorskl]

I will 1-1 catch up with you later on default VPC requirement, background context, etc.