Change the clock bridge to unidirectional instead of bidirectional

clearpath_gz/launch/gz_sim.launch.py

@@ -80,7 +80,7 @@ def generate_launch_description():
         name='clock_bridge',
         output='screen',
         arguments=[
-            '/clock@rosgraph_msgs/msg/Clock@gz.msgs.Clock'
+            '/clock@rosgraph_msgs/msg/Clock[gz.msgs.Clock'
         ]
     )