add type hint for 'data' argument in DataFrame's from_dict method: Un…
…ion[dict, list]

- [ ] closes #xxxx
- [ ] tests added / passed
- [ ] Ensure all linting tests pass, see [here](https://pandas.pydata.org/pandas-docs/dev/development/contributing.html#code-standards) for how to run them
- [ ] whatsnew entry

This pull request is stale because it has been open for thirty days with no activity. Please update or respond to this comment if you're still interested in working on this. @GrossBetruger Thanks for the PR. closing as stale. ping if you want to continue.