Bump requests from 2.26.0 to 2.27.0 (#803)

Bumps [requests](https://github.com/psf/requests) from 2.26.0 to 2.27.0.
- [Release notes](https://github.com/psf/requests/releases)
- [Changelog](https://github.com/psf/requests/blob/main/HISTORY.md)
- [Commits](https://github.com/psf/requests/compare/v2.26.0...v2.27.0)

---
updated-dependencies:
- dependency-name: requests
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements.txt

@@ -1,6 +1,6 @@
 wheel
 black==21.12b0
-requests==2.26.0
+requests==2.27.0
 coreapi==2.3.3
 gitpython==3.1.20
 pre-commit==2.16.0