Update application version to latest version from networkservicemesh/…

…cmd-registry-memory@master networkservicemesh/cmd-registry-memory#236

networkservicemesh/cmd-registry-memory PR link: networkservicemesh/cmd-registry-memory#236

networkservicemesh/cmd-registry-memory commit message:
commit 8f20867dddb345093f95c6316594e5d959897ae2
Author: Network Service Mesh Bot <60070799+nsmbot@users.noreply.github.com>
Date:   Wed Mar 17 09:01:23 2021 -0500

    Merge 8698edd3c9f250eaf3e257666ce1a36d6b9e268d into e0fd8ddae72680b5363a9f2d947dc2032701a359

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:de7a2b32
+        - image: networkservicemeshci/cmd-registry-memory:8f20867d
           env:
             - name: SPIFFE_ENDPOINT_SOCKET
               value: unix:///run/spire/sockets/agent.sock