Upgrade pytz to a more recent version

[olwenya]

pysnow/requirements.txt

Line 22 in 6ac140a

pytz==2019.3

Old version (2019) of pytz is causing all sorts of mayhem with dependencies in my project.

Please upgrade

[olwenya]

Release history here

[olwenya]

Actually I found #177 thanks @ryanpetrello

[olwenya]

sometimes it helps to read the documentation

The development status of pysnow is stable; maintenence will be performed, but no new features added.
New features goes into rbw/aiosnow: a modern, asynchronous library for interacting with ServiceNow.

Migrating to aiosnow 😃