Update maintainers (#259)

(cherry picked from commit e733b4b)

Author: 4ntn

micro_ros_agent/package.xml

@@ -4,8 +4,8 @@
   <name>micro_ros_agent</name>
   <version>3.0.6</version>
   <description>micro-ROS Agent package</description>
-  <maintainer email="pablogarrido@eprosima.com">Pablo Garrido</maintainer>
-  <maintainer email="antoniocuadros@eprosima.com">Antonio Cuadros</maintainer>
+  <maintainer email="eugeniocollado@eprosima.com">Eugenio Collado</maintainer>
+  <maintainer email="carlosespinoza@eprosima.com">Carlos Espinoza</maintainer>
   <license>Apache License 2.0</license>
 
   <buildtool_depend>ament_cmake</buildtool_depend>