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

…d-admission-webhook-k8s@main

PR link: networkservicemesh/cmd-admission-webhook-k8s#171

Commit: a1f5aca
Author: Network Service Mesh Bot
Date: 2022-07-20 04:34:20 -0500
Message:
  - Update go.mod and go.sum to latest version from networkservicemesh/sd…
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:a9d9cdf
+          image: ghcr.io/networkservicemesh/ci/cmd-admission-webhook-k8s:a1f5aca
           imagePullPolicy: IfNotPresent
           readinessProbe:
             httpGet: