sqlalchemy: update version requirements

* Updated minimum and maximum version requirements for SQLAlchemy and
  SQLAlchemy-Utils.

* Fix compatibility problems with invenio.

Signed-off-by: Leonardo Rossi <leonardo.r@cern.ch>
133:1: F999 redefinition of unused 'compile_text' from line 114
140:1: F999 redefinition of unused 'compile_binary' from line 121
146:1: F999 redefinition of unused 'compile_largebinary' from line 127