Pin Konflux Dockerfile version label

Enables dynamic tagging in Konflux releases.

Signed-off-by: Daniel Farrell <[email protected]>

Author: dfarrell07

package/Dockerfile.subctl.konflux

@@ -50,7 +50,7 @@ ENTRYPOINT ["/usr/local/bin/subctl"]
 
 LABEL com.redhat.component="subctl-container" \
       name="rhacm2/subctl-rhel9" \
-      version="${BASE_BRANCH}" \
+      version="v0.21.2" \
       summary="The command-line interface for Submariner (subctl)" \
       description="A command-line utility for installing, configuring, and troubleshooting Submariner cross-cluster connectivity." \
       io.k8s.display-name="Submariner Control Utility (subctl)" \