Add ignore diff for mutatingwebhook

vault/helm-vault.yaml

@@ -25,4 +25,9 @@ spec:
       ref: values
   destination:
     server: https://kubernetes.default.svc
-    namespace: vault
+    namespace: vault
+  ignoreDifferences:
+    - group: admissionregistration.k8s.io
+      kind: MutatingWebhookConfiguration
+      jqPathExpressions:
+      - .webhooks[]?.clientConfig.caBundle