Bump pytz from 2022.7.1 to 2023.3.post1

Bumps [pytz](https://github.com/stub42/pytz) from 2022.7.1 to 2023.3.post1.
- [Commits](stub42/pytz@release_2022.7.1...release_2023.3.post1)

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

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

Author: dependabot[bot]

requirements/base.txt

@@ -35,7 +35,7 @@ flake8-quotes==3.3.2
 pep8-naming==0.13.3
 
 # Other
-pytz==2022.7.1
+pytz==2023.3.post1
 python-dateutil==2.8.2
 argon2-cffi==21.3.0