ChangeLog: https://github.com/privacyidea/privacyidea/releases/tag/v3.6
Unfortunately we have to use `sqlalchemy` at 1.3 for `sqlsoup`. As
`sqlalchemy` is required by a lot of packages, I decided to move this
package out of `pythonPackages` itself and instantiate a new
`pythonPackages` inside the expression where `sqlalchemy` points to
`sqlalchemy_1_3`.
