λ ♻️ : Refactor JML Secrets and regions

[Gary-H9]

This PR is related to this piece of work.

• Adds workflow to ensure JML report is kept up to date going forward.
• Uses the secrets module over the explicit terraform resources.
• switches the region from ireland to london

[github-actions]

Terraform Component 🧱: aws-analytical-platform-data-production-joiners-movers-leavers

Checkov 🛂: success

Trivy 🛂: success

Static Analysis Override Label 🏷️: false

Pusher: @Gary-H9, Action: pull_request, Working Directory: terraform/aws/analytical-platform-data-production/joiners-movers-leavers, Workflow: Terraform, Marker: aws-analytical-platform-data-production-joiners-movers-leavers_static_analysis

[github-actions]

Terraform Component 🧱: aws-analytical-platform-data-production-joiners-movers-leavers

Terraform Initialization ⚙️: success

Terraform Validation 🤖: success

Terraform Plan 🛠️: success

Pusher: @Gary-H9, Action: pull_request, Working Directory: terraform/aws/analytical-platform-data-production/joiners-movers-leavers, Workflow: Terraform, Marker: aws-analytical-platform-data-production-joiners-movers-leavers_plan