[RLlib](deps): Bump gym[atari] from 0.18.3 to 0.19.0 in /python/requirements/rllib

[dependabot[bot]]

Bumps gym[atari] from 0.18.3 to 0.19.0.

Release notes

Sourced from gym[atari]'s releases.

0.19.0

Gym 0.19.0 is a large maintenance release, and the first since @​jkterry1 became the maintainer. There should be no breaking changes in this release.

New features:

• Added custom datatype argument to multidiscrete space (@​m-orsini)
• API compliance test added based on SB3 and PettingZoo tests (@​amtamasi)
• RecordEpisodeStatics works with VectorEnv (@​vwxyzjn)

Bug fixes:

• Removed unused dependencies, removed unnescesary dependency version requirements that caused installation issues on newer machines, added full requirements.txt and moved general dependencies to extras. Notably, "toy_text" is not a used extra. atari-py is now pegged to a precise working version pending the switch to ale-py (@​jkterry1)
• Bug fixes to rewards in FrozenLake and FrozenLake8x8; versions bumped to v1 (@​ZhiqingXiao) -Removed remaining numpy depreciation warnings (@​super-pirata)
• Fixes to video recording (@​mahiuchun, @​zlig)
• EZ pickle argument fixes (@​zzyunzhi, @​Indoril007)
• Other very minor (nonbreaking) fixes

Other:

• Removed small bits of dead code (@​jkterry1)
• Numerous typo, CI and documentation fixes (mostly @​cclauss)
• New readme and updated third party env list (@​jkterry1)
• Code is now all flake8 compliant through black (@​cclauss)

Commits

• 4ede928 Bump version to 0.19.0
• 8810382 Bump frozen lake Versions (#2315)
• cb1a483 Add compliance testing for API (#2289)
• 757c9d6 more texture creation up (#2312)
• c7a8646 lint_python.yml: Remove redundant tests done in pre-commit (#2309)
• c706b54 Add pre-commit hooks for bandit, black, codespell, and flake8 (#2270)
• 8070fb9 Update environments.md (#2308)
• 267916b try removing dead code (#2305)
• 1397e70 Make RecordEpisodeStatistics work with VectorEnv (#2296)
• ddd650a black
• Additional commits viewable in compare view

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[dependabot[bot]]

Looks like gym[atari] is no longer a dependency, so this is no longer needed.