Remove approval to production in CD pipeline

[coreycarvalho]

User Story - Business Need

With anomaly detection in place and our Docker image only being built once, we are ready to implement the final step in our CI/CD Pipeline Improvements epic. This ticket is calling for the removal of the approve to production step in our CD pipeline.

• [x] Ticket is understood, and QA has been contacted (if the ticket has a QA label).

User Story(ies)

As a VA Notify developer I want to remove the approval to production step in our CD pipeline removed So that we have a complete, automated CD pipeline.

Additional Info and Resources

https://github.com/department-of-veterans-affairs/notification-api/blob/main/.github/workflows/cd-pipeline.yml#L104 -- removal of this block of code.

Acceptance Criteria

• [x] After a pipeline is approved to go to staging, it will deploy to staging and then production (sequentially)
• [x] This work is added to the sprint review slide deck (key win bullet point and demo slide)

QA Considerations

Potential Dependencies

[kbelikova-oddball]

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