Switch DNS monitoring to Cloudflare

group_vars/prod

@@ -98,6 +98,6 @@ monitoring:
     - verwaltung
     - warpsrvint
   external_dns_servers:
-    - { ip: "8.8.8.8",      name: "Google" }
-    - { ip: "9.9.9.9",      name: "Quad9" }
-    - { ip: "46.182.19.48", name: "Digitalcourage" }
+    - { ip: "1.1.1.1", name: "Cloudflare" }
+    - { ip: "8.8.8.8", name: "Google" }
+    - { ip: "9.9.9.9", name: "Quad9" }