Add maintainer for planning test utils

Signed-off-by: Muhammad Zulfaqar Azmi <zulfaqar.azmi@tier4.jp>

planning/planning_test_utils/package.xml

@@ -6,6 +6,8 @@
   <description>ROS 2 node for testing interface of the nodes in planning module</description>
   <maintainer email="kyoichi.sugahara@tier4.jp">Kyoichi Sugahara</maintainer>
   <maintainer email="takamasa.horibe@tier4.jp">Takamasa Horibe</maintainer>
+  <maintainer email="zulfaqar.azmi@tier4.jp">Zulfaqar Azmi</maintainer>
+  <maintainer email="mamoru.sobue@tier4.jp">Mamoru Sobue</maintainer>
   <license>Apache License 2.0</license>
 
   <author email="kyoichi.sugahara@tier4.jp">Kyoichi Sugahara</author>
@@ -26,7 +28,6 @@
   <depend>motion_utils</depend>
   <depend>nav_msgs</depend>
   <depend>rclcpp</depend>
-  <depend>route_handler</depend>
   <depend>tf2_msgs</depend>
   <depend>tf2_ros</depend>
   <depend>tier4_api_msgs</depend>