CHANGELOG in message_bus-3.3.3 vs CHANGELOG in message_bus-3.3.4

@@ -1,6 +1,12 @@
 - Unrelease
 
+02-10-2020
+
+- Version 3.3.4
+
+  - FIX: Remove trailing comma incorrectly added in ec60d8865.
+
 18-09-2020
 
 - Version 3.3.3
 
   - FIX: `queue_in_memory` option not being passed to the backends.