fix(monitoring): alertmanager routes

monitoring/alertmanager/config.yml

@@ -1,16 +1,16 @@
 global:
   resolve_timeout: 5m
 route:
-  receiver: "pagerduty"
+  receiver: "null"
   group_by:
     - alertname
   group_wait: 30s
   group_interval: 5m
   repeat_interval: 12h
+  routes:
+    - receiver: "pagerduty"
       matchers:
         - severity!~"deadman"
-  # routes:
-  #   - receiver: "pagerduty"
 receivers:
   - name: "pagerduty"
     pagerduty_configs: