fix: Update networking namespace reference to kube-system in tmpl dir

tmpl/cluster/cloudflare-ddns-secret.sops.yaml

@@ -3,7 +3,7 @@ apiVersion: v1
 kind: Secret
 metadata:
   name: cloudflare-ddns
-  namespace: networking
+  namespace: kube-system
 type: Opaque
 stringData:
     CLOUDFLARE_EMAIL: ${BOOTSTRAP_CLOUDFLARE_EMAIL}