replace deprecated headers (#265)

Author: mhubii

lbr_ros2_control/include/lbr_ros2_control/controllers/lbr_state_broadcaster.hpp

@@ -12,7 +12,7 @@
 #include "controller_interface/controller_interface.hpp"
 #include "hardware_interface/types/hardware_interface_type_values.hpp"
 #include "rclcpp/rclcpp.hpp"
-#include "realtime_tools/realtime_publisher.h"
+#include "realtime_tools/realtime_publisher.hpp"
 
 #include "friClientIf.h"
 #include "friClientVersion.h"