Updated environment.yml 
- [X] closes #45123
- [X] 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
- [X] whatsnew entry
Changed line 123 in environment.yml from 
`git+https://github.com/pydata/pydata-sphinx-theme.git@master` to `git+https://github.com/pydata/pydata-sphinx-theme.git@41764f5`
By pre commit hook `requirements-dev.txt` line 86 changed to `git+https://github.com/pydata/pydata-sphinx-theme.git@41764f5`

Update: 2 checks are failing with the latest released version `0.7.1`. I'm trying an older release version, if that works. It may be need to build from source for pydata-sphinx-theme that is causing the failure. 

If the older version fails, I'll change it to an older commit.  Hi @jreback, 

Using the latest release version causes failure in Doc Build and Upload / Doc Build and Upload (pull_request) pipeline and posix pipeline. I believe you have to build from source for pydata-sphinx-theme that's why installing from the repo? 

The current failure is because of timeout. Let me know what you think. thanks @prithvijitguha 