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

…d-nsmgr-proxy@main

PR link: networkservicemesh/cmd-nsmgr-proxy#273

Commit: 67c1e59
Author: Network Service Mesh Bot
Date: 2021-12-16 11:31:23 -0600
Message:
  - Update go.mod and go.sum to latest version from networkservicemesh/sd…
Signed-off-by: NSMBot <nsmbot@networkservicmesh.io>

apps/nsmgr-proxy/nsmgr-proxy.yaml

@@ -17,7 +17,7 @@ spec:
     spec:
       serviceAccount: nsmgr-proxy-sa
       containers:
-        - image: ghcr.io/networkservicemesh/ci/cmd-nsmgr-proxy:d1a0329
+        - image: ghcr.io/networkservicemesh/ci/cmd-nsmgr-proxy:67c1e59
           imagePullPolicy: IfNotPresent
           name: nsmgr-proxy
           ports: