Change a few ports to use the most recent version of pyjwt
Ports changed to www/py-pyjwt (2.3.0):
```
databases/py-python-arango - PyJWT
devel/py-apns2 - PyJWT>=1.4.0'
devel/py-buildbot - PyJWT
devel/py-twilio - PyJWT >= 2.0.0, < 3.0.0
net-im/py-matrix-synapse - pyjwt>=1.6.4
net/ceph14 - PyJWT
www/seahub - pyjwt==2.1.*
```
Remaining ports using www/py-pyjwt1 (1.7.1):
```
devel/py-qcs-api-client - pyjwt>=1.7.1,<2.0.0
security/py-social-auth-core - PR open: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=260977
sysutils/conan - PyJWT>=1.4.0, <2.0.0
www/py-mwoauth - PyJWT>=1.0.1,<2.0.0
```