fix manifests for kubernetes deployment (#1943)

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## What this PR does


### Release note

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```release-note
[]
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## Summary by CodeRabbit

* **Chores**
  * Configured cluster for high availability with multiple replicas
  * Implemented rolling update strategy to ensure safer deployments
* Enhanced health constraints to maintain cluster stability during
updates

<sub>✏️ Tip: You can customize this high-level summary in your review
settings.</sub>

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packages/apps/kubernetes/templates/cluster.yaml

@@ -292,6 +292,12 @@ metadata:
     {{- end }}
 spec:
   clusterName: {{ $.Release.Name }}
+  replicas: 2
+  strategy:
+    rollingUpdate:
+      maxSurge: {{ $group.maxReplicas }}
+      maxUnavailable: 1
+    type: RollingUpdate
   selector:
     matchLabels:
       cluster.x-k8s.io/cluster-name: {{ $.Release.Name }}
@@ -326,6 +332,7 @@ metadata:
   namespace: {{ $.Release.Namespace }}
 spec:
   clusterName: {{ $.Release.Name }}
+  maxUnhealthy: 0
   nodeStartupTimeout: 10m
   selector:
     matchLabels: