Use the disabled field for namespaces

Tested the whole set as follows:

- hub on 4.20 + spokes on 4.19 and 4.20 -> All green

- hub on 4.19 + spoke on 4.19 -> All green

Author: mbaldessari

values-4.20-group-one.yaml

@@ -2,7 +2,8 @@ esoversion: "external-secrets.io/v1"
 
 clusterGroup:
   namespaces:
-    golang-external-secrets: null
+    golang-external-secrets:
+      disabled: true
     external-secrets-operator:
       operatorGroup: true
       targetNamespaces: []
@@ -13,11 +14,11 @@ clusterGroup:
       namespace: external-secrets-operator
       channel: stable-v1
   applications:
-    golang-external-secrets: null
+    golang-external-secrets:
+      disabled: true
     openshift-external-secrets:
       name: openshift-external-secrets
       namespace: external-secrets
       argoProject: eso
       chart: openshift-external-secrets
       chartVersion: 0.0.*
-

values-4.20-hub.yaml

@@ -2,7 +2,8 @@ esoversion: "external-secrets.io/v1"
 
 clusterGroup:
   namespaces:
-    golang-external-secrets: null
+    golang-external-secrets:
+      disabled: true
     external-secrets-operator:
       operatorGroup: true
       targetNamespaces: []
@@ -13,7 +14,8 @@ clusterGroup:
       namespace: external-secrets-operator
       channel: stable-v1
   applications:
-    golang-external-secrets: null
+    golang-external-secrets:
+      disabled: true
     openshift-external-secrets:
       name: openshift-external-secrets
       namespace: external-secrets