chore: stale bot issues only (#12593)

* chore: stale bot issues only

* Update stale.yml

Author: ndom91

.github/stale.yml

@@ -10,6 +10,7 @@ exemptLabels:
   - triage
   - accepted
 staleLabel: stale
+only: issues
 markComment: >
   It looks like this issue did not receive any activity for 60 days.
   It will be closed in 7 days if no further activity occurs. If you think your issue