feature: Limit number of PRs to update

[mrchief]

Would be nice to have an option to only update the top N PRs or PRs newer than a certain date. This will help in keeping CI/CD costs low by skipping old or stale PRs.

[james-s-w-clark]

I agree that this would be nice.

Here's a workaround to keep costs/CO2 down in the meantime:

One could combine this Action's EXCLUDED_LABELS with something like https://github.com/actions/stale.
I haven't read through the latter, but if it can remove the stale labels upon new interactions then that could work for this use-case. It's a little bit noisy though - it'd be nicer if it's baked into this Action.