missing depends: ros_environment

[realtime-neil]

Steps to reproduce the issue:

apt-cache show ros-foxy-ros-workspace | grep-dctrl --no-field-names --show-field=Depends --field=Depends 'ros-foxy-ros-environment'

Expected behavior:

ros-foxy-ros-workspace has ros-foxy-ros-environment in its Depends.

Actual behavior:

ros-foxy-ros-workspace does not have ros-foxy-ros-environment in its Depends.

Additional information:

https://github.com/ros2-gbp/ros_workspace-release/blob/debian/foxy/focal/ros_workspace/debian/control