add python3-pytest-timeout to test_launch_ros. (#454)

Signed-off-by: Tomoya Fujita <[email protected]>

Author: fujitatomoya

test_launch_ros/package.xml

@@ -30,6 +30,7 @@
   <test_depend>lifecycle</test_depend>
   <test_depend>osrf_pycommon</test_depend>
   <test_depend>python3-pytest</test_depend>
+  <test_depend>python3-pytest-timeout</test_depend>
   <test_depend>python3-yaml</test_depend>
   <test_depend>rclcpp_components</test_depend>
   <test_depend>rclpy</test_depend>