Exempt feature request labels from being stale

For now, the issues marked as feature request will not be automatically closed until further evaluation.

Author: minbi

.github/stale.yml

@@ -5,6 +5,7 @@ daysUntilClose: 7
 # Issues with these labels will never be considered stale
 exemptLabels:
   - investigating
+  - feature request
 # Label to use when marking an issue as stale
 staleLabel: wontfix-stale
 # Comment to post when marking an issue as stale. Set to `false` to disable