bump 2.4.0

Signed-off-by: Hyungyu Kim <[email protected]>

Author: GyuH13

CHANGELOG.rst

@@ -2,7 +2,7 @@
 Changelog for package turtlebot3_msgs
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-2.3.1 (2025-04-28)
+2.4.0 (2025-04-28)
 ------------------
 * Updated Goal.srv for turtlebot3_machine_learning
 * Contributors: ChanHyeong Lee

package.xml

@@ -2,7 +2,7 @@
 <?xml-model href="http://download.ros.org/schema/package_format3.xsd" schematypens="http://www.w3.org/2001/XMLSchema"?>
 <package format="3">
   <name>turtlebot3_msgs</name>
-  <version>2.3.1</version>
+  <version>2.4.0</version>
   <description>
     Message and service types: custom messages and services for TurtleBot3 packages for ROS 2
   </description>