kbs: pin down to released working kbs image version

Fix: #1688
Signed-off-by: Kartik Joshi <[email protected]>

versions.yaml

@@ -27,7 +27,7 @@ tools:
 git:
   guest-components:
     url: https://github.com/confidential-containers/guest-components
-    reference: f20d4b59aa62032e82bd8d8107e6874d9618db50
+    reference: 480a13fb107a3321327af7082d785d209065857c
   kata-containers:
     url: https://github.com/kata-containers/kata-containers
     reference: d0df91935b8840036c2891b1f93dd8059ebe486a
@@ -44,3 +44,6 @@ oci:
   pause:
     registry: docker://registry.k8s.io/pause
     tag: 3.6
+  kbs:
+    registry: ghcr.io/confidential-containers/key-broker-service
+    tag: v0.8.2