[FEATURE] Remove dependency Pin to Rich

[gregegg]

• What are you trying to do?
  I'm trying to run jake ddt on an envinroment with dvc=3.15 installed. However, dvc=3.15 requires rich>12.0, while jake requires rich<11.0.

• What feature or behavior is this required for?
  Running jake ddt on environement with rich>=11.0

• How could we solve this issue? (Not knowing is okay!)

Remove pin to `rich<11.0``

• Anything else?

cc @bhamail / @DarthHater

[gregegg]

A more complex fix would be to allow to run jake ddt on a different environment, i.e., jake ddt -n my_conda_env

[madpah]

rich will be being upgraded as part of #137