Bump pytz from 2022.6 to 2022.7

Bumps [pytz](https://github.com/stub42/pytz) from 2022.6 to 2022.7.
- [Release notes](https://github.com/stub42/pytz/releases)
- [Commits](stub42/pytz@release_2022.6...release_2022.7)

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

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

requirements.txt

@@ -12,7 +12,7 @@ django==4.1.4
     # via django-clone (setup.py)
 future==0.18.2
     # via django-clone (setup.py)
-pytz==2022.6
+pytz==2022.7
     # via django
 six==1.16.0
     # via django-clone (setup.py)