Update gatekeeper to 3.6.0

update "chart" (https://github.com/open-policy-agent/gatekeeper) from "v3.5.2" (5733cf33442d2c9485f59c181117c09e588da6cb) to "v3.6.0" (9503ef2307225c5f6e8d97e312efb008a26e36bb)

https://repo1.dso.mil/platform-one/big-bang/bigbang/-/issues/747

chart/templates/constraint-templates/11_K8sUniqueIngressHost.yaml

-apiVersion: templates.gatekeeper.sh/v1beta1
+apiVersion: templates.gatekeeper.sh/v1
 kind: ConstraintTemplate
 metadata:
   name: k8suniqueingresshost
@@ -12,6 +12,7 @@ spec:
       validation:
         # Schema for the `parameters` field
         openAPIV3Schema:
+          type: object
           properties:
             labels:
               type: array