Added missing dependency

Author: urfeex

ur_robot_driver/package.xml

@@ -51,6 +51,7 @@
   <exec_depend>joint_trajectory_controller</exec_depend>
   <exec_depend>launch</exec_depend>
   <exec_depend>launch_ros</exec_depend>
+  <exec_depend>pose_broadcaster</exec_depend>
   <exec_depend>position_controllers</exec_depend>
   <exec_depend>robot_state_publisher</exec_depend>
   <exec_depend>ros2_controllers_test_nodes</exec_depend>