Bump hiredis from 2.3.2 to 3.3.1 in /requirements

Bumps [hiredis](https://github.com/redis/hiredis-py) from 2.3.2 to 3.3.1.
- [Release notes](https://github.com/redis/hiredis-py/releases)
- [Changelog](https://github.com/redis/hiredis-py/blob/master/CHANGELOG.md)
- [Commits](redis/hiredis-py@v2.3.2...v3.3.1)

---
updated-dependencies:
- dependency-name: hiredis
  dependency-version: 3.3.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

requirements/requirements-prod.in

@@ -19,7 +19,7 @@ Flask==2.3.2
 Flask-RESTful==0.3.9
 gdata==2.0.18
 gunicorn==23.0.0
-hiredis==2.3.2
+hiredis==3.3.1
 html2text==2020.1.16
 icalendar==4.0.9
 imapclient==2.2.0