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

…d-nse-icmp-responder-vpp@main

PR link: networkservicemesh/cmd-nse-icmp-responder-vpp#290

Commit: fe8697f
Author: Network Service Mesh Bot
Date: 2021-11-09 14:18:08 -0600
Message:
  - Update go.mod and go.sum to latest version from networkservicemesh/sd…
Signed-off-by: NSMBot <nsmbot@networkservicmesh.io>

apps/nse-memif/nse.yaml

@@ -17,7 +17,7 @@ spec:
     spec:
       containers:
         - name: nse
-          image: ghcr.io/networkservicemesh/ci/cmd-nse-icmp-responder-vpp:9548999
+          image: ghcr.io/networkservicemesh/ci/cmd-nse-icmp-responder-vpp:fe8697f
           imagePullPolicy: IfNotPresent
           env:
             - name: SPIFFE_ENDPOINT_SOCKET