jazzy release note: callbacks in the executor are no longer ordered. (#4459)

* jazzy release note: callbacks in the executor are no longer ordered.

Signed-off-by: Tomoya.Fujita <[email protected]>
(cherry picked from commit 931688a)

Author: fujitatomoya

source/Releases/Release-Jazzy-Jalisco.rst

@@ -423,6 +423,10 @@ in terms of entity collection rebuilding.
 
 See https://github.com/ros2/rclcpp/pull/2142 for more details.
 
+Due to this change, callbacks in the executor are no longer ordered consistently, even within the same entity.
+
+See https://github.com/ros2/rclcpp/issues/2532 for more details.
+
 ``rclcpp::get_typesupport_handle`` is deprecated
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