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

…d-nsc-vpp@main

PR link: networkservicemesh/cmd-nsc-vpp#386

Commit: 8f91426
Author: Nikita Skrynnik
Date: 2022-04-02 03:13:54 +0700
Message:
  - Add connection monitoring (#386)
* add connection monitoring and conn id generation

Signed-off-by: Nikita Skrynnik <nikita.skrynnik@xored.com>

* fix ci issues

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

apps/nsc-memif/nsc.yaml

@@ -17,7 +17,7 @@ spec:
     spec:
       containers:
         - name: nsc
-          image: ghcr.io/networkservicemesh/ci/cmd-nsc-vpp:ba3a77c
+          image: ghcr.io/networkservicemesh/ci/cmd-nsc-vpp:8f91426
           imagePullPolicy: IfNotPresent
           env:
             - name: SPIFFE_ENDPOINT_SOCKET