DB migration script seems broken

[fistons]

Description

DB migration script seems broken:

Traceback (most recent call last):
  File "/opt/synapse/synapse/env3/bin/synapse_port_db", line 542, in run
    [self.handle_table(*res) for res in setup_res], consumeErrors=True
twisted.internet.defer.FirstError: FirstError[#75, [Failure instance: Traceback: <class 'psycopg2.ProgrammingError'>: column "is_verified" is of type boolean but expression is of type integer
LINE 1: ...OAb3YHkZcVpmqshOHoNAj8xshe8DOA83mJz08w', 1, 0, 0, 0, '{"ciph...

Steps to reproduce

• Run the migration script as written here: https://github.com/matrix-org/synapse/blob/master/docs/postgres.rst#using-the-port-script

Version information

synapse 0.99.1.1 / Debian 9

[fistons]

Issue should be fixed with #4701