build(deps): bump pytz from 2021.3 to 2022.1

Bumps [pytz](https://github.com/stub42/pytz) from 2021.3 to 2022.1.
- [Release notes](https://github.com/stub42/pytz/releases)
- [Commits](https://github.com/stub42/pytz/compare/release_2021.3...release_2022.1)

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

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

requirements.txt

@@ -59,7 +59,7 @@ pymemcache==3.5.1
 pyparsing==3.0.7
 python-dateutil==2.8.2
 python-tumblpy==1.1.4
-pytz==2021.3
+pytz==2022.1
 PyYAML==6.0
 redis==4.1.4
 requests==2.27.1