Maintenance: Improve Govcloud/China Deployment Github Action

[svozza]

Summary

Currently, we must run the GitHub action that deploys to China and GovCloud 4 times, once each of gamma and then for prod. This requires manual steps that are error prone. We should update the deployment job to first deploy to gamma and if that succeeds then deploy to prod.

Let's also add another layer of vaildation, let's add a check to make sure that the layer version passed in to the action is exactly one version above the previous one.

Why is this needed?

This will prevent accidentally forgetting the promote to prod step.

Which area does this relate to?

Automation

Solution

Make the GitHub action deploy to gamma and prod sequentially with the prod deployment only happening if gamma is successful.

Acknowledgment

• This request meets Powertools for AWS Lambda (TypeScript) Tenets
• Should this be considered in other Powertools for AWS Lambda languages? i.e. Python, Java, and .NET

Future readers

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[powertools-for-aws-oss-automation]

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