Release: Update kbs kustomization.yaml for v0.9.0

Signed-off-by: Chris Porter <porter@ibm.com>

Author: portersrc

kbs/config/kubernetes/base/kustomization.yaml

@@ -5,7 +5,7 @@ namespace: coco-tenant
 images:
 - name: kbs-container-image
   newName: ghcr.io/confidential-containers/key-broker-service
-  newTag: built-in-as-v0.8.2
+  newTag: built-in-as-v0.9.0
 
 resources:
 - namespace.yaml