I’m not sure what you mean by “the github-actions bot”. This is a comment left on the PR you get when running a custom GitHub actions workflow that triggers Pulumi? e.g.
https://www.pulumi.com/docs/guides/continuous-delivery/github-actions/
The message “PR event (null)” obviously could use some improvement. But it sounds strange to see “contains no changes and does not warrant a Pulumi Preview”.
Is that coming from your Github Actions workflow file? Or the default script we have in the pulumi:actions container?