Update registry mirror to UNH infrastructure (cnti-testcatalog#2079)

Refs: cnti-testcatalog#2013

Signed-off-by: Martin Matyas <[email protected]>

.github/workflows/actions.yml

@@ -72,7 +72,7 @@ jobs:
         containerdConfigPatches:
         - |-
           [plugins."io.containerd.grpc.v1.cri".registry.mirrors."docker.io"]
-            endpoint = ["http://139.178.70.81:80"]
+            endpoint = ["http://10.200.142.204:80"]
           [plugins."io.containerd.grpc.v1.cri".registry.mirrors."registry:5000"]
             endpoint = ["http://localhost:5000"]
           [plugins."io.containerd.grpc.v1.cri".registry.mirrors."registry.default.svc.cluster.local:5000"]