DEPS: bump pyarrow min to 1.0 #41329
- [x] closes #41329
- [ ] tests added / passed
- [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

> Can we remove pa_under_1p0 too? Thanks. Looks good otherwise.
> 
> https://github.com/pandas-dev/pandas/blob/776329fdd7fef357cc7ef3a37ffcdda3df8e6fc1/pandas/compat/pyarrow.py#L10

I'll remove all the compat in a follow-up PR. prob worth bumping to the latest patch version of 1.x (e.g. 1.0.1) thanks @fangchenli 