Update black and gunicorn

Black needed to be updated from v22 to >v24.3.0 due to a security vulnerability. This should be a simple update but I'm requesting a review since this is an increase of two major versions and I had to run black reformat on everything or else Lint checks would fail. Tagging @awernle

Gunicorn also must be updated (20.1.0 -> 22.0.0) or else vulnerability audit within the container creation process will fail.