Try the helm chart

Signed-off-by: Martyn Ranyard <m@rtyn.berlin>

everything-app/project-infra.yaml

@@ -30,4 +30,4 @@ spec:
     - https://openebs.github.io/mayastor-extensions/
     - https://raw.githubusercontent.com/kubernetes-csi/csi-driver-smb/master/charts
     - https://qonstrukt.github.io/helm-charts/
-    - https://github.com/zalando/postgres-operator
+    - https://opensource.zalando.com/postgres-operator/charts/postgres-operator