Bump hexbytes from 0.3.1 to 1.2.1

Bumps [hexbytes](https://github.com/ethereum/hexbytes) from 0.3.1 to 1.2.1.
- [Changelog](https://github.com/ethereum/hexbytes/blob/main/docs/release_notes.rst)
- [Commits](ethereum/hexbytes@v0.3.1...v1.2.1)

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

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

requirements.txt

@@ -24,7 +24,7 @@ drf-yasg[validation]==1.21.7
 firebase-admin==6.5.0
 flower==2.0.1
 gunicorn[gevent]==22.0.0
-hexbytes==0.3.1
+hexbytes==1.2.1
 hiredis==2.3.2
 packaging>=21.0
 pika==1.3.2