Bump dev-tools to the latest version mypy (1.1.1) and black 23.3.0

Requires: !54 (merged) !63 (merged)

Changes since the previous version of mypy (0.991):

• https://mypy-lang.blogspot.com/2023/02/mypy-10-released.html
• https://mypy-lang.blogspot.com/2023/03/mypy-111-released.html

Changes in Black:

• https://github.com/psf/black/releases