Bump the pytz-dependencies group in /reqs with 1 update

Updates the requirements on [types-pytz](https://github.com/python/typeshed) to permit the latest version.

Updates `types-pytz` to 2023.3.1.1
- [Commits](https://github.com/python/typeshed/commits)

---
updated-dependencies:
- dependency-name: types-pytz
  dependency-type: direct:production
  dependency-group: pytz-dependencies
...

Signed-off-by: dependabot[bot] <[email protected]>

reqs/requirements-lint.txt

@@ -4,4 +4,4 @@ isort==5.13.2
 mypy==1.6.1
 
 # Typing packages
-types-pytz~=2021.3.0
+types-pytz~=2023.3.1