Bump pytz from 2022.7.1 to 2023.3 (#570)

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

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

docs-requirements.txt

@@ -34,7 +34,7 @@ pycparser==2.21
     # via cffi
 pygments==2.14.0
     # via sphinx
-pytz==2022.7.1
+pytz==2023.3
     # via babel
 requests==2.28.2
     # via sphinx