github pages workflow is failing

[Esteban Martinena Guerrero]

Bug report

Description of the bug

The github pages workflow is failing: https://github.com/open-rmf/rmf_ros2/actions/workflows/gh-pages.yaml

ERROR: Rosdep experienced an error: Multiple packages found with the same name "rmf_fleet_adapter":
- rmf_core/rmf_fleet_adapter
- rmf_fleet_adapter_python/rmf_fleet_adapter
Multiple packages found with the same name "rmf_task_ros2":
- rmf_core/rmf_task_ros2
- rmf_fleet_adapter_python/rmf_task_ros2
Multiple packages found with the same name "rmf_traffic_ros2":
- rmf_core/rmf_traffic_ros2
- rmf_fleet_adapter_python/rmf_traffic_ros2
Please go to the rosdep page [1] and file a bug report with the stack trace below.
[1] : http://www.ros.org/wiki/rosdep

rosdep version: 0.22.1

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/rosdep2/main.py", line 146, in rosdep_main
    exit_code = _rosdep_main(args)
  File "/usr/lib/python3/dist-packages/rosdep2/main.py", line 446, in _rosdep_main
    return _package_args_handler(command, parser, options, args)
  File "/usr/lib/python3/dist-packages/rosdep2/main.py", line 501, in _package_args_handler
    pkgs = find_catkin_packages_in(path, options.verbose)
  File "/usr/lib/python3/dist-packages/rosdep2/catkin_packages.py", line [35](https://github.com/open-rmf/rmf_ros2/actions/runs/3650836161/jobs/6167327718#step:6:36), in find_catkin_packages_in
    packages = find_packages(path)
  File "/usr/local/lib/python3.10/dist-packages/catkin_pkg/packages.py", line 103, in find_packages
    raise RuntimeError('\n'.join(duplicates))
RuntimeError: Multiple packages found with the same name "rmf_fleet_adapter":
- rmf_core/rmf_fleet_adapter
- rmf_fleet_adapter_python/rmf_fleet_adapter
Multiple packages found with the same name "rmf_task_ros2":
- rmf_core/rmf_task_ros2
- rmf_fleet_adapter_python/rmf_task_ros2
Multiple packages found with the same name "rmf_traffic_ros2":
- rmf_core/rmf_traffic_ros2
- rmf_fleet_adapter_python/rmf_traffic_ros2