python3Packages.privacyidea: fix eval with python3
While `privacyidea-ldap-proxy` only works on `python2`[1], `privacyidea`
itself works fine with `python3`, however it needs version one of
`pyjwt`[2], so I had to add `pyjwt1` which was already packaged for
`python2`[3] to the `python3` package-set. I think that's fine though
since `python2` should be only used when actually needed which isn't the
case here.
Closes #122250
[1] https://github.com/privacyidea/privacyidea-ldap-proxy/issues/50
[2] https://github.com/privacyidea/privacyidea/issues/2629
[3] bf9b6b1ef3