Forgot to staple notarization to file

[simmonsj330]

Description

Forgot the most important part of notarization: actually stapling the accepted notarization to the dmg file.

Others

• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• My code passes all the checks pylint, flake8, black, ... To speed up development you should run pre-commit install.
• New and existing unit tests pass locally with my changes. You can test this locally using pytest tests/....