Fix cairo 1.18.0 mac crash, upgrade certifi, always use our libs when zip-installed

[schmave]

https://cmu-cs-academy.atlassian.net/browse/CSA-1052

The following code crashes on Mac when run with:

• brew-installed cairo 1.18.0
• pygame==2.5.2 (and others)
• pycairo==1.25.0 (and others)

import cairo
fontCtx = cairo.Context(cairo.ImageSurface(cairo.FORMAT_ARGB32, 0, 0))
fontCtx.text_extents('Hello, world!')

import pygame
pygame.init()

[schmave]

test_image_gen is failing for pip-based installs on Mac because the inspector labels aren't bold, nor is the "Exception! App stopped!" error.

[schmave]

The inspector looks right to me when I run it outside of test_image_gen, and this is a big improvement over the current state of affairs where labels are unusable when using cairo 1.18. But maybe we should see what's going wrong with the tests too.

[schmave]

Reported to pygame here: https://github.com/pygame/pygame/issues/4060

[schmave]

Ready for one more look @austin-schick

[schmave]

Cairo isn't letting us draw bold/italic text on Mac, so that's why the CI build is still failing. https://github.com/pygobject/pycairo/issues/351