deploy/kubernetes: Update snapshot-controller image

Update `snapshot-controller` to its latest version.

Signed-off-by: Benoît Knecht <[email protected]>

Author: BenoitKnecht

deploy/kubernetes/snapshot-controller/setup-snapshot-controller.yaml

@@ -33,7 +33,7 @@ spec:
       serviceAccountName: snapshot-controller
       containers:
         - name: snapshot-controller
-          image: gcr.io/k8s-staging-sig-storage/snapshot-controller:v5.0.1
+          image: gcr.io/k8s-staging-sig-storage/snapshot-controller:v6.0.1
           args:
             - "--v=5"
             - "--leader-election=true"