Adding "stale" GitHub Action (GH-21247)

Adding "stale" GitHub Action

Added the "stale" GitHub action to the CPython repo.
PR's older than 30 days will be labeled as stale using the "stale-pr" label.

Closes https://github.com/python/core-workflow/issues/372

Co-authored-by: Brett Cannon <brett@python.org>

Mariatta committed 5y ago

9cc8fa6ac89e9ea3ee483675b3c373650fc1bb3a

Parent: b9ced83

Committed by GitHub <noreply@github.com> on 12/15/2020, 7:58:43 PM