Bash update script for MacOS

I love keeping all things things up-to-date in a simple way. I came up with the following script to update my Mac which uses homebrew, pipx and pyenv to manage installed applications, Python versions and PiPY packages.

It will update all brew formulas and casks, list all installed pipx packages and update them and finally list all installed Python versions and for each of them, list all installed PiPY packages and update them.