MAINT: Bump pytz from 2021.1 to 2022.1

Bumps [pytz](https://github.com/stub42/pytz) from 2021.1 to 2022.1.
- [Release notes](https://github.com/stub42/pytz/releases)
- [Commits](stub42/pytz@release_2021.1...release_2022.1)

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

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

Author: dependabot[bot]

test_requirements.txt

@@ -3,7 +3,7 @@ wheel<0.37.1
 setuptools<49.2.0
 hypothesis==6.21.6
 pytest==6.2.5
-pytz==2021.1
+pytz==2022.1
 pytest-cov==2.12.1
 pickle5; python_version == '3.7' and platform_python_implementation != 'PyPy'
 # for numpy.random.test.test_extending