Update the testing branch for the software list update workflow to
include the SHA of the commit that triggers the workflow. This should
help track down problems if there is a failure in testing/rendering.
Update the workflow's requirements to use a specific version at the updated
location of the Python project doing the heavy lifting. Additionally the
requirements file is added to the actions/cache key used.
Add a GitHub Actions workflow and related files to automatically update
SOFTWARE-LIST.md when a push to the develop branch occurs. This
leverages the cisagov/md-table-to-yaml Python library to perform the
conversions.