Add markdown results as output and fix actionsToken

[joshjohanning]

1. Write the markdown results to a file and create that file as an output (so that teams can use this markdown elsewhere, ie creating a process to publish this to the README.md.
2. Fix actionsToken since it wasn't working - I think it was copy/paste error referring to wrong variable
   • It seems like one could simply remove this input and combine it with the PatToken parameter - but perhaps PowerShell is more finicky than I think between PATs and the GitHub Token.
   • For what it's worth, the GITHUB_TOKEN now works with both the actions-token and pat-token input (see workflow)

same PR made in other action:

• https://github.com/DeveloperMetrics/lead-time-for-changes/pull/34