chore: Add logging statement to aws-python-promote-or-quarantine handler

[trend-william-hung]

Enhance plugin logging information

Change Summary

1. this handler has same code with inner post-action-tag function. Add a starter logging information for helping debug

PR Checklist

• [ ] I've read and followed the Contributing Guide.
• Documents/Readmes
  • [ ] Updated accordingly
  • [ ] Not required
• Plugins that have versioning
  • [ ] Version bumped and follows Semantic Versioning
  • [ ] (Azure Only): Ensure the version for the package location in template.json has been updated
  • [ ] Not required

Other Notes