Update databases requirement from <=0.5.5,>=0.5 to >=0.5,<0.6.1 (#347)

Update databases requirement from <=0.5.5,>=0.5 to >=0.5,<0.6.1 (#347)

* Update databases requirement from <=0.5.5,>=0.5 to >=0.5,<0.6.1

Updates the requirements on [databases](https://github.com/encode/databases) to permit the latest version.
- [Release notes](https://github.com/encode/databases/releases)
- [Changelog](https://github.com/encode/databases/blob/master/CHANGELOG.md)
- [Commits](https://github.com/encode/databases/compare/0.5.0...0.6.0)

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

Signed-off-by: dependabot[bot] <support@github.com>
* Update requirements.txt

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Marcel van der Veldt <m.vanderveldt@outlook.com>