chore(run_out): add maintainer (autowarefoundation#6130)

Signed-off-by: Tomohito Ando <tomohito.ando@tier4.jp>

Author: TomohitoAndo

planning/behavior_velocity_run_out_module/package.xml

@@ -10,6 +10,7 @@
   <maintainer email="tomoya.kimura@tier4.jp">Tomoya Kimura</maintainer>
   <maintainer email="shumpei.wakabayashi@tier4.jp">Shumpei Wakabayashi</maintainer>
   <maintainer email="takayuki.murooka@tier4.jp">Takayuki Murooka</maintainer>
+  <maintainer email="kosuke.takeuchi@tier4.jp">Kosuke Takeuchi</maintainer>
 
   <license>Apache License 2.0</license>