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

…d-nsmgr@main

PR link: networkservicemesh/cmd-nsmgr#503

Commit: 043b999
Author: Denis Tingaikin
Date: 2022-05-30 04:11:13 +0300
Message:
  - bump: update to go v1.18 (#503)
* bump: update go to v1.18

Signed-off-by: Denis Tingaikin <denis.tingajkin@xored.com>

* fix linter/dockerfile

Signed-off-by: Denis Tingaikin <denis.tingajkin@xored.com>

* fix typo

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

apps/nsmgr/nsmgr.yaml

@@ -17,7 +17,7 @@ spec:
     spec:
       serviceAccount: nsmgr-sa
       containers:
-        - image: ghcr.io/networkservicemesh/ci/cmd-nsmgr:608d302
+        - image: ghcr.io/networkservicemesh/ci/cmd-nsmgr:043b999
           imagePullPolicy: IfNotPresent
           name: nsmgr
           ports: