Update kubic signature

The kubic repo has changed it signature key so update it to unbreak
container builds.

Change-Id: I3edc9bebfc6807fb2ed76e615fc9eeff48c03911

Dockerfile

@@ -65,7 +65,7 @@ COPY --from=builder /tmp/openshift-install/kubectl /usr/local/bin/kubectl
 COPY --from=builder /tmp/openshift-install/oc /usr/local/bin/oc
 
 # https://podman.io/getting-started/installation.html
-COPY tools/2472D6D0.asc /etc/apt/trusted.gpg.d/kubic.asc
+COPY tools/4D64390375060AA4.asc /etc/apt/trusted.gpg.d/kubic.asc
 RUN echo 'deb https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/Debian_10/ /' > /etc/apt/sources.list.d/devel:kubic:libcontainers:stable.list \
   && apt-get update \
   && apt-get install -y \