Enable progress update function

[lfse-slafleur]

optimizer-worker/src/grow_worker/worker.py

Line 75 in 1439d3f

update_progress_function=None,

Currently the update progress function is disabled due to #57 . When #57 is unblocked, we should enable it again as the process running Casadi will be the same process again that has the AMQP connection.