RDS destroy takes place if validation fails

[AdrianHammond]

Feature Request

Description of Problem:

To ensure that created services are cleaned up check / update delete-rds-db playbook / workflow setup to ensure that service is deleted in the event that validation step fails.

Potential Solutions:

Update of destroy playbook and workflow steps.

Ref: https://docs.github.com/en/actions/managing-workflow-runs/re-running-workflows-and-jobs#re-running-failed-jobs-in-a-workflow

[AdrianHammond]

This was fixed / tested as part of final prep for OSF.