Bump requests from 2.26.0 to 2.27.1

Bumps [requests](https://github.com/psf/requests) from 2.26.0 to 2.27.1.
- [Release notes](https://github.com/psf/requests/releases)
- [Changelog](https://github.com/psf/requests/blob/main/HISTORY.md)
- [Commits](psf/requests@v2.26.0...v2.27.1)

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

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

requirements.txt

@@ -17,11 +17,11 @@ drf-yasg[validation]==1.20.0
 gnosis-py[django]==3.9.0
 gunicorn[gevent]==20.1.0
 hexbytes==0.2.2
-lxml==4.7.1
+lxml==4.8.0
 numpy==1.22.3
 packaging==21.3
 psycogreen==1.0.2
 psycopg2-binary==2.9.3
 redis==4.1.4
-requests==2.26.0
+requests==2.27.1
 web3==5.24.0