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

…d-registry-k8s@main

PR link: networkservicemesh/cmd-registry-k8s#387

Commit: 684dda6
Author: Network Service Mesh Bot
Date: 2023-06-29 08:17:25 -0500
Message:
  - Update go.mod and go.sum to latest version from networkservicemesh/sd…
Signed-off-by: NSMBot <nsmbot@networkservicmesh.io>

apps/registry-k8s/registry-k8s.yaml

@@ -17,7 +17,7 @@ spec:
     spec:
       serviceAccountName: registry-k8s-sa
       containers:
-        - image: ghcr.io/networkservicemesh/ci/cmd-registry-k8s:b89d220
+        - image: ghcr.io/networkservicemesh/ci/cmd-registry-k8s:684dda6
           env:
             - name: SPIFFE_ENDPOINT_SOCKET
               value: unix:///run/spire/sockets/agent.sock