feat(ci)!: modifications for externally triggered deployments and upgrades

[anayeaye]

Changes

CICD

• Add composite action to be used by veda-deploy
• Update cicd to use the composite action
• Add gitflow enforcer
• Add CfnOutput to pass env vars between stacks in veda-deploy
• Cicd.yml simplified (for now) to automatically deploy on dev and main branches. In the future we may want to implement the pattern of calling the cdk-actions/workflow that is used for production for the lower environments as well but today the lower environment aws setup lacks the appropriate deployment role

Upgrades

• Upgrade to latest aws-cdk version https://github.com/aws/aws-cdk/releases?q=node&expanded=true to use latest node runtime version for AwsCustomResource https://github.com/NASA-IMPACT/veda-auth/blob/main/infra/stack.py#L176-L199
• Updated aws-cdk version requires additional cdk context "@aws-cdk/customresources:installLatestAwsSdkDefault": false

Breaking changes

• Stop creating an additional duplicate values with veda_ in keys client aws secrets manager (no longer required for downstream deployment)