Temporarily depend on PickNik fork to fix missing gazebo_ros2_control rosdep

[henningkayser]

See https://github.com/moveit/moveit2/issues/2864

I also triggered a docker image build on this branch.

[henningkayser]

CI needs to be run again after the pending docker image is completed (and hopefully fixed) https://github.com/moveit/moveit2_tutorials/actions/runs/9423734835

[Abishalini]

Looks like the CI job is still using 22.04

[stephanie-eng]

Closing in favour of #921