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](https://github.com/stub42/pytz/compare/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>

requirements.txt

@@ -2,7 +2,7 @@ Django>=4.0.7
 pytz-2023.3
 sqlparse==0.4.3
 asgiref==3.7.2
-pytz==2022.7.1
+pytz==2023.3.post1
 sqlparse==0.4.4
 requests==2.28.2
 python-slugify==8.0.1