Update macOS SSL certificates (#447)

Update macOS SSL certificates using latest `certifi` certificate bundle.

Co-authored-by: Yannick Jadoul <yannick.jadoul@belgacom.net>
Co-authored-by: Matthieu Darbois <mayeut@users.noreply.github.com>

cibuildwheel/util.py

@@ -127,6 +127,7 @@ class BuildOptions(NamedTuple):
 
 resources_dir = Path(__file__).resolve().parent / 'resources'
 get_pip_script = resources_dir / 'get-pip.py'
+install_certifi_script = resources_dir / "install_certifi.py"
 
 
 class NonPlatformWheelError(Exception):