Follow-Up Ticket: Update Workflows to Fetch Secrets from AWS Secrets Manager

[sukeshreddyg]

User Story

As a Modernisation Platform Engineer,
I want to update the remaining workflows in all MP-managed repositories (except modernisation-platform-environments) to use the new centralized secrets management action, So that secrets are consistently managed, and GitHub secrets can be safely deleted.

Value / Purpose

• Ensure all workflows across MP-managed repositories use the new centralized GitHub Action for secrets management.
• Eliminate reliance on GitHub secrets, improving security and maintainability.
• Maintain consistency and reduce redundancy in handling secrets across repositories.

Context / Background

#7109

Useful Contacts

No response

Additional Information

• An example of a workflow already updated to use the centralized secrets management can be found in the scheduled-baseline workflow.
• Use the new centralized GitHub Action for secrets management created in the modernisation-platform-github-actions repository.

Definition of Done

• All workflows in MP-managed repositories (except modernisation-platform-environments) are updated to fetch secrets from AWS Secrets Manager using the new centralized action.
• Workflows successfully fetch, encrypt, declare, and decrypt secrets using the centralized action.
• GitHub secrets are deleted from repositories once workflows are confirmed to use the new centralized action.
• Documentation is written to reflect the use of the centralized secrets management action.