Merge pull request #49 from c2corg/dependabot/pip/pytz-2022.1

Bump pytz from 2021.3 to 2022.1

Author: cbeauchesne

requirements.txt

@@ -1,4 +1,4 @@
 docopt==0.6.2
 requests==2.27.1
 python-dateutil==2.8.2
-pytz==2021.3
+pytz==2022.1