[Doc] Update dask-on-ray table for 2.9.1

[architkulkarni]

Why are these changes needed?

Updates the Dask-on-ray compatibility table based on the following instruction:

Get the latest compatible Dask version from here and create a PR to master to update the doc. The PR needs to be cherry picked to the release branch as well. The file is moved to doc/source/ray-more-libs/dask-on-ray.rst

See #41639 for a similar PR

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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 :(