When other issues refer to a stale issue, don't mark it as stale, especially if closed as a duplicate of to-be-stale issue

[Mikaela]

Description:

When I close an issue as a duplicate of another issue, the bot shouldn't mark the another issue as a stale.

Justification:

For example I recently closed krille-chan/fluffychat#2602 and krille-chan/fluffychat#2147 as duplicates of krille-chan/fluffychat#89 and krille-chan/fluffychat#334 and today the bot decided to start commenting that the canonical issues have had no activity and will be closed.

GitHub issues natively support marking issues as duplicates of other issues and I would hope that information is accessible to the bot and thus it could take that and when that happened into consideration before marking issues as stale, if not even the fact that canonical issues have been referred to from other issues.

Are you willing to submit a PR?

I fear I don't have the skills required for that.

[chiranjib-swain]

Hi, @Mikaela
Thank you for raising this. We’ll look into it and share an update as soon as we have more information.