Extend from default SSBC config

Author: christianbundy

.github/stale.yml

@@ -1,20 +1,11 @@
-# Number of days of inactivity before an issue becomes stale
-daysUntilStale: 60
-# Number of days of inactivity before a stale issue is closed
-daysUntilClose: 7
+_extends: .github
+
 # Issues with these labels will never be considered stale
+# This overrides `exemptLabels` from https://github:ssbc/.github
 exemptLabels:
   - pinned
   - security
   - enhancement
   - bug
   - performance
-# Label to use when marking an issue as stale
-staleLabel: stale
-# Comment to post when marking an issue as stale. Set to `false` to disable
-markComment: >
-  This issue has been automatically marked as stale because it has not had
-  recent activity. It will be closed if no further activity occurs. Thank you
-  for your contributions.
-# Comment to post when closing a stale issue. Set to `false` to disable
-closeComment: false
+