Description

This PR is fixing an issue with persisting action inputs between steps of the runner. This is an issue that is downstream of a problem with the GitHub Actions runner, ref: actions/runner#3514

Closes #2553

Merge / deployment checklist

• Confirm this change is backwards compatible with existing workflows.
• Confirm the readme has been updated if necessary. (Bug fix, doesn't need a change in readme).
• Confirm the changelog has been updated if necessary. (Ported changelog entry from Work around broken github/runner input handling for post steps #2554, an alternative fix for the original issue)

Acknowledgments

• Thanks to @chrisgavin for the code that formed the basis of this PR, and @jsoref for the original issue report, a PR containing code leading us to a solution, and for helping us iterate on this PR by testing our changes and proposing further improvements.