Add missing WATCHDOG_NOTIFY_BAN update option

update.sh

@@ -124,6 +124,7 @@ CONFIG_ARRAY=(
   "SKIP_LETS_ENCRYPT"
   "USE_WATCHDOG"
   "WATCHDOG_NOTIFY_EMAIL"
+  "WATCHDOG_NOTIFY_BAN"
   "SKIP_CLAMD"
   "SKIP_IP_CHECK"
   "ADDITIONAL_SAN"