Use correct tricycle_controller as dependency (#861)

Author: christophfroehlich

gz_ros2_control_demos/package.xml

@@ -52,7 +52,7 @@
   <exec_depend>joint_trajectory_controller</exec_depend>
   <exec_depend>mecanum_drive_controller</exec_depend>
   <exec_depend>ros2controlcli</exec_depend>
-  <exec_depend>tricycle_steering_controller</exec_depend>
+  <exec_depend>tricycle_controller</exec_depend>
 
   <test_depend>ament_lint_auto</test_depend>
   <test_depend>ament_lint_common</test_depend>