Add missing deps for test_nodes

[christophfroehlich]

Closes #1377

2024-11-20T04:17:11.0314151Z     from launch_ros.substitutions import FindPackageShare
2024-11-20T04:17:11.0315851Z E   ModuleNotFoundError: No module named 'launch_ros'
2024-11-20T04:17:11.0318975Z - generated xml file: /__w/ros2_controllers/ros2_controllers/ros_ws/build/ros2_controllers_test_nodes/pytest.xml -

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.57%. Comparing base (79358e3) to head (608c25b).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1378      +/-   ##
==========================================
- Coverage   83.57%   83.57%   -0.01%     
==========================================
  Files         122      122              
  Lines       10960    10959       -1     
  Branches      929      928       -1     
==========================================
- Hits         9160     9159       -1     
- Misses       1489     1490       +1     
+ Partials      311      310       -1     

Flag	Coverage Δ
unittests	83.57% <100.00%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...st_publisher_forward_position_controller_launch.py	100.00% <100.00%> (ø)
...st_publisher_joint_trajectory_controller_launch.py	100.00% <100.00%> (ø)

... and 3 files with indirect coverage changes

---- 🚨 Try these New Features:

• Flaky Tests Detection - Detect and resolve failed and flaky tests