Use env property to set the processing queue size

- not really necessary but just to trigger a build/deploy

Author: marko-bekhta

src/main/resources/application.properties

@@ -29,6 +29,9 @@ quarkus.security.users.embedded.enabled=true
 quarkus.security.users.embedded.plain-text=true
 quarkus.security.users.embedded.users."management-user"=${MANAGEMENT_USER_PASSWORD}
 #
+# Processing queue configuration:
+processing.events.queue-size=${PROCESSING_QUEUE_SIZE:1000}
+#
 # Scheduler:
 # >> By default, the scheduler is not started unless a @Scheduled business method is found.
 # >> You may need to force the start of the scheduler for "pure" programmatic scheduling via quarkus.scheduler.start-mode=forced