update release notes

doc/release_notes.rst

@@ -106,6 +106,12 @@ joint_limits
 ************
 * Add header to import limits from standard URDF definition (`#1298 <https://github.com/ros-controls/ros2_control/pull/1298>`_)
 
+lifecycle state accessing
+**************************
+* With (`#1683 <https://github.com/ros-controls/ros2_control/pull/1683>`_) the ``rclcpp_lifecycle::State & get_state()`` and ``void set_state(const rclcpp_lifecycle::State & new_state)`` are replaced by ``rclcpp_lifecycle::State & get_lifecycle_state()`` and ``void set_lifecycle_state(const rclcpp_lifecycle::State & new_state)``.
+* This change affects controllers and hardware.
+* This is related to (`#1240 <https://github.com/ros-controls/ros2_control/pull/1240>`_) as variant support introduces ``get_state`` and ``set_state`` methods for setting/getting state of handles.
+
 ros2controlcli
 **************
 * Spawner colours were added to ``list_controllers`` depending upon active or inactive (`#1409 <https://github.com/ros-controls/ros2_control/pull/1409>`_)