fix(chart): add failurePolicy to ClusterSecretStore webhook (#6247)

Co-authored-by: Gergely Bräutigam <gergely.brautigam@sap.com>

deploy/charts/external-secrets/templates/validatingwebhook.yaml

@@ -48,6 +48,7 @@ webhooks:
   admissionReviewVersions: ["v1", "v1beta1"]
   sideEffects: None
   timeoutSeconds: 5
+  failurePolicy: {{ .Values.webhook.failurePolicy }}
 ---
 apiVersion: admissionregistration.k8s.io/v1
 kind: ValidatingWebhookConfiguration