Do not close bug and enhancement issues

.github/workflows/stale.yml

@@ -12,4 +12,5 @@ jobs:
         with:
           stale-issue-message: 'This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 5 days'
           days-before-stale: 60
-          days-before-close: 5
+          days-before-close: 5
+          exempt-issue-labels: 'bug,enhancement'