Bump pytz from 2022.7.1 to 2023.3

Bumps [pytz](https://github.com/stub42/pytz) from 2022.7.1 to 2023.3.
- [Release notes](https://github.com/stub42/pytz/releases)
- [Commits](https://github.com/stub42/pytz/compare/release_2022.7.1...release_2023.3)

---
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

@@ -1,6 +1,6 @@
 Django>=4.0.7
 asgiref==3.6.0
-pytz==2022.7.1
+pytz==2023.3
 sqlparse==0.4.3
 requests==2.28.2
 python-slugify==8.0.1