Update application version to latest version from networkservicemesh/…

…cmd-nse-icmp-responder@main networkservicemesh/cmd-nse-icmp-responder#

networkservicemesh/cmd-nse-icmp-responder PR link: https://github.com/networkservicemesh/cmd-nse-icmp-responder/pull/

networkservicemesh/cmd-nse-icmp-responder commit message:
commit bc4a730b01ea7282af621a1e0c3cc961596967e9
Author: Network Service Mesh Bot <60070799+nsmbot@users.noreply.github.com>
Date:   Sun May 9 13:04:09 2021 -0500

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

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

apps/nse-kernel/nse.yaml

@@ -16,7 +16,7 @@ spec:
     spec:
       containers:
         - name: nse
-          image: networkservicemeshci/cmd-nse-icmp-responder:4be2f721
+          image: networkservicemeshci/cmd-nse-icmp-responder:bc4a730b
           imagePullPolicy: IfNotPresent
           env:
             - name: SPIFFE_ENDPOINT_SOCKET