Updates to PRs linked to an issue should clear the stale attribute

[jsoref]

The problem

1. actions/stale said an issue was stale docs-build fails on forks primer/view_components#1033 (comment) and marked it as stale docs-build fails on forks primer/view_components#1033 (comment)
2. I made a PR that would close the issue docs-build fails on forks primer/view_components#1033 (reference)
3. The bot did not remove its stale marker
4. I had to add an extra comment to the issue: docs-build fails on forks primer/view_components#1033 (comment)

The solution

Ideally the bot should be able to recognize that a PR exists and is linked to the issue and remove the stale annotation. As stale-bot runs on a schedule, it can have access to pull requests and can therefore check to see if there are stale-issues with linked PRs and then check to see if those PRs have been touched since it last ran, and then remove the stale notice.

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 5 days

[jsoref]

👎

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 5 days

[jsoref]

👎

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 5 days

[jsoref]

👎

[bilderbuchi]

In a similar vein, issue that have an open PR linked to them (like conda/conda-build#3170) should not be marked stale at all, imo. Otherwise, stale bot would close an issue that has a PR currently waiting that closes it.
If anything, the linked PR should be checked for staleness, as that has become the "upstream" datum of information concerning the issue in question.

[dorner]

I'm kind of shocked that this isn't the default behavior. I switched to this action because I assumed it was. ☹️ In general if an issue has a linked PR, and that PR is active, that should be enough to keep the issue itself "alive".