Black Linter Update + Formatting Fix

[tylerwhardy]

Hi,

I updated Black to resolve Regular Expression Denial of Service (ReDoS) vulnerability.

This required updating the formatting of a few files to pass linting since it would throw:

would reformat /home/circleci/repo/docker/django/management/commands/update_admin_user.py
would reformat /home/circleci/repo/fvserver/wsgi.py
would reformat /home/circleci/repo/server/models.py
would reformat /home/circleci/repo/server/views.py

Oh no! 💥 💔 💥
4 files would be reformatted, 42 files would be left unchanged.