[py312] Fix or skip tests+examples for Tune dependencies that do not support py312

[justinvyu]

Why are these changes needed?

Policy:

• Tests for library integrations will be skipped on py312 if that library doesn't support py312.
  • Add this library to a py312 ML issue tracker. (TODO)
• Tests for library integrations will be skipped altogether if it imposes a version cap on a more important library.
  • For example, numpy needs to be upgraded 1.26+ for py312. However, hebo requries numpy<1.25. Since our CI chooses a single numpy version for across the board, we'd rather update numpy than keep the hebo test dependency.
  • Same issue for horovod.
  • Add this library to a py312 ML issue tracker. Note that these are no longer tested in CI and need to be manually tested. (TODO)
• Important library integrations that do not support py312 yet will be added to the issue tracker and treated as a medium high priority that needs to be solved as soon as the library adds the py312 support.
  • For example, tensorflow DDP doesn't work well in py312. Whenever this gets fixed, a new tf version should be pinned in test deps and the tests should be re-enabled.

Related issue number

Closes #46220

Checks

• I've signed off every commit(by using the -s flag, i.e., git commit -s) in this PR.
• I've run scripts/format.sh to lint the changes in this PR.
• I've included any doc changes needed for https://docs.ray.io/en/master/.
  • I've added any new APIs to the API Reference. For example, if I added a
    method in Tune, I've added it in doc/source/tune/api/ under the
    corresponding .rst file.
• I've made sure the tests are passing. Note that there might be a few flaky tests, see the recent failures at https://flakey-tests.ray.io/
• Testing Strategy
  • Unit tests
  • Release tests
  • This PR is not tested :(

[can-anyscale]

thank you for working on this @justinvyu, i'll leave to @matthewdeng to see if he has any comments for a few days otherwise i'll unblock, thankks

[matthewdeng]

what happened here?

[justinvyu]

py312 adds a bunch of new lines + formatting to stack traces 😆