Update jwt.py

[gabrielsroka]

60 minutes is too long and causes error #382

[gabrielsroka]

it seems like an obvious fix (and a minor one: change 60 to 59):

CLA may not be required if the contribution(s) are minor enough not to be considered intellectual property

pls don't make ppl who are trying to help jump thru unnecessary time-wasting hoops. i not only found the issue, reported it, but i also found a workaround and submitted a PR

[bretterer]

@gabrielsroka

pls don't make ppl who are trying to help jump thru unnecessary time-wasting hoops. i not only found the issue, reported it, but i also found a workaround and submitted a PR

These are not unnecessary time-wasting hoops. Additionally, no one has stated you need a CLA yet for this change. This is a legal requirement for our 3rd party submissions for fixes.