fix(tier4_dummy_object_rviz_plugin): fix missing dependency (#9306)

Signed-off-by: Esteve Fernandez <esteve.fernandez@tier4.jp>

Author: esteve

simulator/tier4_dummy_object_rviz_plugin/package.xml

@@ -10,6 +10,7 @@
   <buildtool_depend>ament_cmake</buildtool_depend>
   <buildtool_depend>autoware_cmake</buildtool_depend>
 
+  <depend>libboost-dev</depend>
   <depend>libqt5-core</depend>
   <depend>libqt5-gui</depend>
   <depend>libqt5-widgets</depend>