Fixed requirement 'pyjwt' to major version 2. (jazzband#361)

Co-authored-by: Andrew Chen Wang <60190294+Andrew-Chen-Wang@users.noreply.github.com>

Author: llorenspujol

setup.py

@@ -55,7 +55,7 @@
     install_requires=[
         'django',
         'djangorestframework',
-        'pyjwt',
+        'pyjwt>=2,<3',
     ],
     python_requires='>=3.7',
     extras_require=extras_require,