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

…d-admission-webhook-k8s@main

PR link: networkservicemesh/cmd-admission-webhook-k8s#98

Commit: 87ff6aa
Author: Denis Tingaikin
Date: 2022-03-17 12:45:01 +0300
Message:
  - Merge pull request #98 from Chunosov/fix-restart-crash
Signed-off-by: NSMBot <nsmbot@networkservicmesh.io>

apps/admission-webhook-k8s/admission-webhook.yaml

@@ -17,7 +17,7 @@ spec:
       serviceAccount: admission-webhook-sa
       containers:
         - name: admission-webhook-k8s
-          image: ghcr.io/networkservicemesh/ci/cmd-admission-webhook-k8s:8ad48d4
+          image: ghcr.io/networkservicemesh/ci/cmd-admission-webhook-k8s:87ff6aa
           imagePullPolicy: IfNotPresent
           readinessProbe:
             httpGet: