chore(deps): update pytz requirement (#94)

Updates the requirements on [pytz](https://github.com/stub42/pytz) to permit the latest version.
- [Release notes](https://github.com/stub42/pytz/releases)
- [Commits](stub42/pytz@release_2020.1...release_2022.1)

---
updated-dependencies:
- dependency-name: pytz
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.txt

@@ -1,5 +1,5 @@
 scramp>=1.2.0,<1.5.0
-pytz>=2020.1,<2021.9
+pytz>=2020.1,<2022.2
 beautifulsoup4>=4.7.0,<5.0.0
 boto3>=1.9.201,<2.0.0
 requests>=2.23.0,<2.27.2