There's a merged pull request on the void-packages repository

.github/workflows/stale.yml: update to v6
https://github.com/void-linux/void-packages/pull/39537

Description:
This fixes a bug where a stale issue/PR that gets updated without a comment remains stale indefinitely and never gets closed (actions/stale#715).

The only "breaking" change in that update is that the default close reason has changed to "not planned". That seems like a more desirable default anyways.

A current example of the bug can be found in #37283.

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#### Testing the changes
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