Bump tzdata from 2023.3 to 2023.4

Bumps [tzdata](https://github.com/python/tzdata) from 2023.3 to 2023.4.
- [Release notes](https://github.com/python/tzdata/releases)
- [Changelog](https://github.com/python/tzdata/blob/master/NEWS.md)
- [Commits](python/tzdata@2023.3...2023.4)

---
updated-dependencies:
- dependency-name: tzdata
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements-dev.txt

@@ -160,7 +160,7 @@ typing-extensions==4.9.0
     #   mypy
     #   pydantic
     #   uvicorn
-tzdata==2023.3
+tzdata==2023.4
     # via pandas
 uvicorn==0.24.0.post1
     # via datahub (pyproject.toml)

requirements.txt

@@ -59,7 +59,7 @@ typing-extensions==4.9.0
     #   fastapi
     #   pydantic
     #   uvicorn
-tzdata==2023.3
+tzdata==2023.4
     # via pandas
 uvicorn==0.24.0.post1
     # via datahub (pyproject.toml)