📝 Description

Replaced personal access tokens with GitHub App tokens throughout the release workflow for improved security and granular permissions management.

🛠️ Changes Made

• Updated all token generation steps to use actions/create-github-app-token@v2
• Replaced hardcoded tokens with dynamically generated GitHub App tokens
• Configured proper app ID and private key secrets for token generation
• Updated token references across all jobs (prepare-inputs, publish-to-pypi, create-releases, update-tutorials, update-demos, update-release-notes)

✅ Checklist

• I updated the documentation (if applicable)
• I have partial tested the changes in this Run
• I confirmed whether my changes are covered by system tests
  • If yes, I ran all relevant system tests and ensured they passed before submitting this PR
  • I updated existing system tests and/or added new ones if needed to cover my changes
• If I introduced a deprecation:
  • I followed the Deprecation Guidelines
  • I updated the relevant Jira ticket for documentation

🧪 Testing

• Verified that all workflow steps can access the GitHub App token properly
• Tested token generation with correct permissions for repository operations
• Confirmed that checkout operations work with the new token approach
• Validated that cross-repository operations (UI repo) function correctly

🔗 References

• Ticket link: [Security enhancement for CI/CD workflows]
• Design docs links: GitHub App authentication best practices
• External links: https://github.com/actions/create-github-app-token