Update go.mod and go.sum to latest version from networkservicemesh/cm…

…d-registry-proxy-dns@main

PR link: networkservicemesh/cmd-registry-proxy-dns#457

Commit: 20eb880
Author: Network Service Mesh Bot
Date: 2022-02-10 22:45:02 -0600
Message:
  - Update go.mod and go.sum to latest version from networkservicemesh/sd…
Signed-off-by: NSMBot <nsmbot@networkservicmesh.io>

apps/registry-proxy-dns/registry-proxy-dns.yaml

@@ -16,7 +16,7 @@ spec:
         "spiffe.io/spiffe-id": "true"
     spec:
       containers:
-        - image: ghcr.io/networkservicemesh/ci/cmd-registry-proxy-dns:8fb519b
+        - image: ghcr.io/networkservicemesh/ci/cmd-registry-proxy-dns:20eb880
           env:
             - name: SPIFFE_ENDPOINT_SOCKET
               value: unix:///run/spire/sockets/agent.sock