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

…d-forwarder-vpp@main

PR link: https://github.com/networkservicemesh/cmd-forwarder-vpp/pull/

Commit: 595145d
Author: Artem Glazychev
Date: 2021-09-02 00:23:20 +0700
Message:
  - Update govpp version (#334)
Signed-off-by: NSMBot <nsmbot@networkservicmesh.io>

apps/forwarder-vpp/forwarder.yaml

@@ -16,7 +16,7 @@ spec:
     spec:
       hostNetwork: true
       containers:
-        - image: ghcr.io/networkservicemesh/ci/cmd-forwarder-vpp:5d3f784
+        - image: ghcr.io/networkservicemesh/ci/cmd-forwarder-vpp:595145d
           imagePullPolicy: IfNotPresent
           name: forwarder-vpp
           securityContext: