[Feature] Output user and email to logs of unsigned users

[ryanfaircloth]

Is your feature request related to a problem? Please describe.
As a repo admin troubleshooting why signatures are not accepted it would be helpful to produce a list of github IDs+emails included in the PR record

Describe the solution you'd like
Use more verbose logging in the action to make problematic commit obvious

Describe alternatives you've considered
Manual debugging

Additional context
Add any other context or screenshots about the feature request here.

[ibakshay]

Hi @rfaircloth-splunk, Thanks a lot for creating this feature request. Feel free to create a PR for this ticket. If not, we will implement more verbose logging solution from our side :) .