Activate stale bot (open-telemetry#769)

* Activate stale bot

* Rename file

Author: iNikem

.github/workflows/state-pr.yaml .github/workflows/stale-pr.yaml

@@ -12,6 +12,5 @@ jobs:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
         stale-pr-message: 'This PR was marked stale due to lack of activity. It will be closed in 7 days.'
         close-pr-message: 'Closed as inactive. Feel free to reopen if this PR is still being worked on.'
-        days-before-stale: 14
+        days-before-stale: 7
         days-before-close: 7
-        debug-only: true