build: fix MacOS installation issues with bnb and uv index resolution

[johannaSommer]

Description

This PR fixes:

• missing system specification for the bits and bytes packages
• the installation configuration for the GitHub actions, causing too many pings on the pruna pythonanywhere

Related Issue

None.

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Installation tests pass now, so do mypy tests.

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

Additional Notes

None.

[johnrachwan123]

Amazing, thanks a lot for the hard work!