Update stale.yml

Author: AndrewRH

.github/stale.yml

@@ -6,8 +6,7 @@ daysUntilClose: 7
 exemptLabels:
   - pinned
   - enhancement 🚀
-  - bug
-  - Bug
+  - Bug 🐛
   - HIGH
   - high
 # Label to use when marking an issue as stale