[RLlib](deps): Bump pettingzoo from 1.8.2 to 1.18.1 in /python/requirements/rllib

[dependabot]

Bumps pettingzoo from 1.8.2 to 1.18.1.

Release notes

Sourced from pettingzoo's releases.

1.17.0

• Changed metadata naming scheme to match gym. In particular render.modes -> render_modes and video.frames_per_second -> render_fps
• Fixed bad pettingzoo import error messages caused by autodeprication logic

1.16.0

• KAZ: Code rewrite and numerous fixes, added manual control capabililty
• Supports changes to seeding in gym 0.22.0
• Fixed prison state space, bumped version
• Fixed battlefield state space
• Increased default cycles in api tests (making them catch more errors than before)
• Added turn-based to parallel wrapper
• Moved magent render logic to Magent repo

1.15.0

• Bug fixes to KAZ, pistonball, multiwalker, cooperative pong. Versions bumped.
• Removed logo from gather, version bumped.
• Added FPS attribute to all environments to make rendering easier.
• Multiwalker now uses pygame instead of pyglet for rendering
• Renamed to_parallel and from_parallel to aec_to_parallel and parallel_to_aec
• Added is_parallelizable metadata to ensure that the aec_to_parallel wrapper is not misused
• Fixed the API tests to better support agent generation

1.14.0

-Bug fixes and partial redesign to pursuit environment logic and rendering. Environment is now learnable, version bumped -Bug fixes and reward function redesign for cooperative pong environment, version bumped -Ball moving into the left column due to physics engine imprecision in pistonball no longer gives additional reward, version bumped -PyGame version bumped, no environment version bumps needed -Python 3.10 support -Fixed parallel API tests to allow environments without possible_agents

1.13.1

• Fixed unnecessary warnings generated about observation and action spaces
• Upstreamed new rlcard version with new texas holdem no limit implementation, bumped version to v6
• Updated python chess dependency, bumped version to v5
• Dropped support for python 3.6, added official support for 3.9
• Various documentation fixes

1.12.0

• API changes
  • new observation_space(agent), action_space(agent) methods that retreive the static space for an agent
  • possible_agents, observation_spaces, action_spaces attributes made optional. Wrappers pass these attributes through if they exist.
  • parallel environment's agents list contains agents to take next step, instead of agents that took previous step.
  • Generated agents now allowed, agents can be created any time during an episode. Note that agents cannot resurect, once they are done, they cannot be readded to the environment.
• Fixed unexpected behavior with close method in pursuit environment
• Removed pygame loading messages
• Fix pillow dependency issue
• Removed local ratio arg from pistonball environment
• Gym 0.21.0 support
• Better code formatting (isort, etc.)

... (truncated)

Commits

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[dependabot]

Superseded by #82.