Minimize PR overhead for non-code changes.

[ndouglas]

Description

As someone who hates that we don't have all of the branch protection rules enabled on main,
I should prevent Tugboat deploys and GHA workflow runs on documentation-only PRs
So that people don't look like Walter Donovan in Indiana Jones and the Last Crusade when he drank from the fake Grail while waiting for completely unnecessary test runs to complete.

Acceptance Criteria

• Tugboat deploy doesn't happen on documentation-only changes
• GHA workflows don't happen on documentation-only changes.

[ndouglas]

This could turn out to be a major PITA/time sink. It's not a huge priority, so it can be abandoned if it turns out to be more complicated than anticipated.

[JunTaoLuo]

FYI, paths-ignore should be very helpful here: https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#example-excluding-paths.

[ndouglas]

@JunTaoLuo Yeah, big thing is the Tugboat deploy which is currently just using the webhook integration. It should work if we shift it to only dispatch the event conditionally, from a workflow... I would think... but I haven't had much time to look into it 🙁

[BerniXiongA6]

@JunTaoLuo how many points of this ticket would you say were completed so far? We can carry over ticket if needed (I can calculate the points manually on my planning calculator). cc: @maortiz-27-80

[JunTaoLuo]

I think there's still 5 points left here since I've done about half of the work but the half remaining seems to be trickier.

[BerniXiongA6]

Thanks @JunTaoLuo ! cc: @maortiz-27-80