Running this workflow on both `ready_for_review` and `review_requested`
was causing duplicate comments to show up when PRs were moved out of
draft mode. This is because moving out of draft mode would both trigger
a workflow run and automatically request review, which in turn would
trigger a second workflow run, and the two runs were triggered in such
quick succession that our commentMarker detection wouldn't work.
Rather than running the "check-changes" action immediately when a PR is
opened, wait for the PR to be ready for review (either by being taken
out of draft mode, or by having reviewers added). This way it's possible
to create a draft PR, then create a corresponding deployment ticket
which references the PR, add that ticket to the PR description, and mark
the PR ready for review, thereby pre-empting the bot so it doesn't have
to leave a comment.
Allow github workflow configuration change checker to also check for
changes to SQL schema and user grants. This is an incredibly simple
version so the PR author is in charge of determining what tickets should
be created.
Aaron Gable