chore: switch from jose to pyjwt

[t16n]

Description

The python-jose project is not being maintained anymore.

The project is using an outdated dependency: ecdsa

Fixes # (issue) Minerva timing attack on P-256 in python-ecdsa

There already is an issue on the python-jose project, with no reaction by the authors: https://github.com/mpdavis/python-jose/issues/341

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This PR switches python-jose to PyJWT

Checklist

• [x] Do unit tests run with no errors?
• [x] Has coverage not decreased?
• [x] Is your code concise and clean?
• [x] Are the conf.py and installation sphinx updated with the new version?
• [x] Is the init.py version variable updated?