Update tweepy requirement from ~=3.7 to >=4.0,<5.0
Update tweepy requirement from ~=3.7 to >=4.0,<5.0

Updates the requirements on [tweepy](https://github.com/tweepy/tweepy) to permit the latest version.
- [Release notes](https://github.com/tweepy/tweepy/releases)
- [Changelog](https://github.com/tweepy/tweepy/blob/master/docs/changelog.md)
- [Commits](https://github.com/tweepy/tweepy/compare/v3.7.0...v4.0.0)

---
updated-dependencies:
- dependency-name: tweepy
  dependency-type: direct:production
...

snarfed/oauth-dropins,snarfed/oauth-dropins,snarfed/oauth-dropins