rhcos-toolbox: Update image_runlabel to newer podman format
diff --git a/rhcos-toolbox b/rhcos-toolbox
index 461ccc5..99fa9cd 100755
--- a/rhcos-toolbox
+++ b/rhcos-toolbox
@@ -68,7 +68,7 @@
 }
 
 image_runlabel() {
-    sudo podman container runlabel --display RUN "$TOOLBOX_IMAGE"
+    sudo podman image inspect "$TOOLBOX_IMAGE" --format "{{.Labels.run}}"
 }
 
 image_pull() {