Turn the agent upwards, by a number of degrees.
Mirrors tbp/monty/frameworks/actions/actions.py::LookUp, the mirror image of ...Actions.LookDown down to the constraint that stops the agent looking into its own body.
tbp/monty/frameworks/actions/actions.py::LookUp
...Actions.LookDown
@type t() :: %Monty.Frameworks.Actions.LookUp{ agent_id: atom() | String.t(), constraint_degrees: float(), rotation_degrees: float() }