Update package.xml (#4) (#6)

package.xml

@@ -4,7 +4,7 @@
   <name>micro_ros_msgs</name>
   <version>5.0.0</version>
   <description>Definitions for the ROS 2 msgs entities information used by micro-ROS to leverage its functionality to the same level as ROS 2, by means of a dedicated graph manager</description>
-  <maintainer email="josesantoniomoralparras@eprosima.com">Jose Antonio Moral</maintainer>
+  <maintainer email="pablogarrido@eprosima.com">Pablo Garrido</maintainer>
   <license>Apache License 2.0</license>
 
   <buildtool_depend>ament_cmake</buildtool_depend>