Update application version to latest version from networkservicemesh/…

…cmd-registry-k8s@master networkservicemesh/cmd-registry-k8s#42

networkservicemesh/cmd-registry-k8s PR link: networkservicemesh/cmd-registry-k8s#42

networkservicemesh/cmd-registry-k8s commit message:
commit 726e486e0ef6ca8915cd8e9331da8bb9cadb3eb6
Author: Network Service Mesh Bot <60070799+nsmbot@users.noreply.github.com>
Date:   Wed Feb 24 10:59:30 2021 -0600

    Merge 684a7f2e4d7273bd32e74547f6be1f7e7ed1b1c6 into 36cd69bd5fe42882239ae03e09321bf183f8264b

Signed-off-by: NSMBot <nsmbot@networkservicmesh.io>

apps/registry-k8s/registry-k8s.yaml

@@ -16,7 +16,7 @@ spec:
     spec:
       serviceAccountName: registry-k8s-sa
       containers:
-        - image: networkservicemeshci/cmd-registry-k8s:e2fe624f
+        - image: networkservicemeshci/cmd-registry-k8s:726e486e
           env:
             - name: SPIFFE_ENDPOINT_SOCKET
               value: unix:///run/spire/sockets/agent.sock