Bump hexbytes from 0.2.3 to 0.3.1

Bumps [hexbytes](https://github.com/ethereum/hexbytes) from 0.2.3 to 0.3.1.
- [Changelog](https://github.com/ethereum/hexbytes/blob/master/docs/release_notes.rst)
- [Commits](ethereum/hexbytes@v0.2.3...v0.3.1)

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

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -23,7 +23,7 @@ drf-yasg[validation]==1.21.5
 firebase-admin==6.2.0
 flower==1.2.0
 gunicorn[gevent]==20.1.0
-hexbytes==0.2.3
+hexbytes==0.3.1
 hiredis==2.2.3
 packaging>=21.0
 pika==1.3.2