Update FXDROID config for Reopened tickets (#562)

Co-authored-by: Mathieu Leplatre <[email protected]>

Author: onemahon

config/config.prod.yaml

@@ -132,7 +132,7 @@
       UNCONFIRMED: Backlog
       NEW: Backlog
       ASSIGNED: In Progress
-      REOPENED: In Progress
+      REOPENED: Backlog
       RESOLVED: Closed
       VERIFIED: Closed
       FIXED: Closed