Gym-anm

Fix documentation automated builds.

def step(...):
...
return obs, r, self.terminated, truncated, info


Dependency updates

A few dependencies were bumped up and updated:

- `numpy`: `1.x` -> `>= 2.1`
- `pandas`: `1.x` -> `>= 2.0`
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If you have any feedback, or are having trouble installing and running `v2.0`, definitely reach out! 🙂

What's Changed
* Only close rendering if it was open by robinhenry in https://github.com/robinhenry/gym-anm/pull/19


**Full Changelog**: https://github.com/robinhenry/gym-anm/compare/1.1.5...1.1.6

What's Changed
* Fix np.complex is deprecated error by robinhenry in https://github.com/robinhenry/gym-anm/pull/15
* Upgrade poetry to 1.4 in actions by robinhenry in https://github.com/robinhenry/gym-anm/pull/18


**Full Changelog**: https://github.com/robinhenry/gym-anm/compare/1.1.4...1.1.5

**Full Changelog**: https://github.com/robinhenry/gym-anm/compare/1.1.3...1.1.4