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