Update application version to latest version from networkservicemesh/…

…cmd-registry-memory@master networkservicemesh/cmd-registry-memory#254

networkservicemesh/cmd-registry-memory PR link: networkservicemesh/cmd-registry-memory#254

networkservicemesh/cmd-registry-memory commit message:
commit a7ff954a73271898439adf4d60e2c309e62228bd
Author: Network Service Mesh Bot <60070799+nsmbot@users.noreply.github.com>
Date:   Sat Apr 3 12:03:40 2021 -0500

    Merge 175404baf8852738b21fbbac16d3a45c6e66edef into 522cb0b9528d7d1dae1eee070c1b10f7d6983acb

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

apps/registry-memory/registry-memory.yaml

@@ -15,7 +15,7 @@ spec:
         app: nsm-registry
     spec:
       containers:
-        - image: networkservicemeshci/cmd-registry-memory:cb806344
+        - image: networkservicemeshci/cmd-registry-memory:a7ff954a
           env:
             - name: SPIFFE_ENDPOINT_SOCKET
               value: unix:///run/spire/sockets/agent.sock