Bump types-pytz from 2021.3.3 to 2021.3.4

Bumps [types-pytz](https://github.com/python/typeshed) from 2021.3.3 to 2021.3.4.
- [Release notes](https://github.com/python/typeshed/releases)
- [Commits](https://github.com/python/typeshed/commits)

---
updated-dependencies:
- dependency-name: types-pytz
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

poetry.lock

@@ -49,7 +49,7 @@ pyupgrade = "^2.31.0"
 furo = ">=2021.11.12"
 pytest-cov = "^3.0.0"
 types-croniter = "^1.0.6"
-types-pytz = "^2021.3.3"
+types-pytz = "^2021.3.4"
 pytest_async = "^0.1.1"
 pytest-asyncio = "^0.16.0"
 respx = "^0.19.0"