Update deploy action to also be triggered by changes to workflow files

[sgibson91]

We may want to update this to specify only changes the deploy-hubs.yaml. I'm not sure what is gained if we trigger on changes to, say, python-lint.yaml?

[yuvipanda]

Makes sense to restrict it to just that file. Do we still use a separate action file? If so we should include that too.

[sgibson91]

Makes sense to restrict it to just that file. Do we still use a separate action file? If so we should include that too.

Yes we do, will add that

[yuvipanda]

Thanks, @sgibson91! I've hit approve, so merge whenever you think you can look at the deploys?

[sgibson91]

Thanks! Will probably be tomorrow morning for me now :)

[yuvipanda]

@sgibson91 yay! I am very happy with how the review process in this worked for me :)

[yuvipanda]

I often find it slightly awkward to merge PRs because what if they broke deployment? Now that i"m just reviewing and not deploying, it's much easier to commit :D