Feature request: update PettingZoo version

Hi, would it be possible to update this repo to use the most recent version of PettingZoo? This project is listed in PettingZoo's [third-party-environments](https://pettingzoo.farama.org/environments/third_party_envs/), but we only want to include environments which work with the current version.

If you need any help working out issues due to different versions feel free to ask, there were some breaking changes in version 1.2, so it requires a bit of code changes to adapt. The previous API returned `done` in the step() function, whereas the new one returns truncated and terminated (matching gymnasium). There is a migration guide for gymnasium explaining the changes further, the steps should be basically the same (we're working on making resources for updating old PettingZoo repositories as well): https://gymnasium.farama.org/content/migration-guide/

Start with the repository's environment implementation and the linked Gymnasium migration guide, focusing on step() and the PettingZoo version currently used. Update the environment for the current PettingZoo API, including the terminated/truncated transition, and confirm that the repository remains compatible with the current version.

Written by the indexing model from the issue text.