[fix] package.xml dependencies

Author: Ziwen Zhuang

unitree_legged_real/package.xml

@@ -54,16 +54,19 @@
   <build_depend>geometry_msgs</build_depend>
   <build_depend>sensor_msgs</build_depend>
   <build_depend>unitree_legged_msgs</build_depend>
+  <build_depend>unitree_legged_srvs</build_depend>
   <build_export_depend>roscpp</build_export_depend>
   <build_export_depend>std_msgs</build_export_depend>
   <build_export_depend>geometry_msgs</build_export_depend>
   <build_export_depend>sensor_msgs</build_export_depend>
   <build_export_depend>unitree_legged_msgs</build_export_depend>
+  <build_export_depend>unitree_legged_srvs</build_export_depend>
   <exec_depend>roscpp</exec_depend>
   <exec_depend>std_msgs</exec_depend>
   <exec_depend>geometry_msgs</exec_depend>
   <exec_depend>sensor_msgs</exec_depend>
   <exec_depend>unitree_legged_msgs</exec_depend>
+  <exec_depend>unitree_legged_srvs</exec_depend>
 
 
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