Use humble branch of control_toolbox repo (#258)

Author: christophfroehlich

ros_controls.humble.repos

@@ -6,7 +6,7 @@ repositories:
   ros-controls/control_toolbox:
     type: git
     url: https://github.com/ros-controls/control_toolbox.git
-    version: ros2-master
+    version: humble
   ros-controls/kinematics_interface:
     type: git
     url: https://github.com/ros-controls/kinematics_interface.git