feat(EN-2932): Migrate github secrets to vault

[karouf]

Transition to Secure GitHub Actions Workflows (STEP-18 Compliance)

As part of our security enhancements, we have done the legwork to migrate approximately 100 of our 420 repositories left to no longer store secrets on GitHub servers, complying with STEP-18. We need your help to finalize this transition.
This change is required by Platform Security for all repositories that use GitHub Actions workflows.

Why This Change?

• To eliminate the storage of sensitive data on GitHub servers, securing our operations.
• To allow teams to manage their own secrets using Hashicorp Vault and yak

What to Do?

• Review this PR to confirm that your workflows behave as expected with the new secrets handling method.
• Test the workflows manually if possible, especially on this PR branch.
• Ensure to merge this PR by 15th September. Past this date, any remaining PRs will be force merged by the Platform Security team.

Need Help?

• For non-urgent support, open a ticket on the AUTOP Helpdesk.
• For critical and urgent issues, raise an incident.

Next Steps

• Post-merger, be vigilant for any potential failures and address them promptly to maintain smooth operations.