TST: Skip leaky test on Python 3.10
- [ ] xref #41935 (we should close after updating MacPython)
- [ ] tests added / passed
- [ ] Ensure all linting tests pass, see [here](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit) for how to run them
- [ ] whatsnew entry

This test seems to be leaking on Python 3.10, causing subsequent tests to fail with a cryptic and flaky error. Let's skip it.
This unblocks official Python 3.10 support.
I am not fixing the test since my first attempt at fixing the leakiness failed and I don't understand and don't have time to fix the problem.

If this works, we can revert #41990.
Hello @lithomas1! Thanks for updating this PR. We checked the lines you've touched for [PEP 8](https://www.python.org/dev/peps/pep-0008) issues, and found:



There are currently no PEP 8 issues detected in this Pull Request. Cheers! :beers: 

##### Comment last updated at 2021-10-08 14:41:15 UTC @github-actions pre-commit @github-actions pre-commit @github-actions pre-commit We need to target 1.3.4 since we've already released Python 3.10 wheels, which means we've committed to Python 3.10 support in 1.3.x. We cannot commit to Python 3.10 support if we allow failure on the CI build. This PR takes the CI build out of allow failure by resolving the leaky test causing flaky, cryptic errors. sounds good  LGTM thanks @lithomas1 very nice @meeseeksdev backport 1.3.x Something went wrong ... Please have  a look at my logs.