fix(chart): add deprecation notice

Signed-off-by: Markus Maga <[email protected]>

charts/kubernetes-external-secrets/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 name: kubernetes-external-secrets
 version: 8.5.2
 appVersion: 8.5.2
-description: Kubernetes External Secrets CustomResourceDefinition
+description: "Deprecated: Kubernetes External Secrets CustomResourceDefinition"
 keywords:
   - kubernetes-external-secrets
   - secrets
@@ -12,3 +12,4 @@ sources:
 maintainers:
   - name: external-secrets
     url: https://github.com/external-secrets
+deprecated: true

charts/kubernetes-external-secrets/README.md

@@ -1,3 +1,8 @@
+# ⚠️ Deprecated
+
+This project has been [deprecated](https://github.com/external-secrets/kubernetes-external-secrets/issues/864).
+Please take a look at ESO (External Secrets Operator) instead https://github.com/external-secrets/external-secrets
+
 # 💂 Kubernetes External Secrets
 
 [Kubernetes External Secrets](https://github.com/external-secrets/kubernetes-external-secrets) allows you to use external secret management systems (*e.g.*, [AWS Secrets Manager](https://aws.amazon.com/secrets-manager/)) to securely add secrets in Kubernetes. Read more about the design and motivation for Kubernetes External Secrets on the [GoDaddy Engineering Blog](https://godaddy.github.io/2019/04/16/kubernetes-external-secrets/).