fix: scale bundled argocd-redis to 0 replicas

Redis migrated to shared-redis.data:6379; the bundled Deployment from the
upstream install.yaml is no longer needed.

manifest/overlays/production/disable-bundled-redis-patch.yaml

@@ -0,0 +1,7 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: argocd-redis
+  namespace: argocd
+spec:
+  replicas: 0

manifest/overlays/production/kustomization.yaml

@@ -15,6 +15,7 @@ patches:
   - path: argocd-rbac-cm-patch.yaml
   - path: argocd-notifications-cm-patch.yaml
   - path: repo-server-patch.yaml
+  - path: disable-bundled-redis-patch.yaml
 
 # KSOPS decrypts secret.enc.yaml at render time.
 # The presence of ksops-generator.yaml activates the KSOPS CMP plugin.