Why we don't use certifi root certificates by default?

Hey there,

Today my colleauge step into the problem with ceritificate that time to time appears with other people who use your client.
You can read about this problem more here:
https://stackoverflow.com/questions/59808346/python-3-slack-client-ssl-sslcertverificationerror

As I see the problem that people have some problem with root certificates on their machine.
Python always had a problem with root certificatates and to solve this problem people started to use the project certifi.

For example you can find usage of this project in the kinda popular library requests
https://github.com/psf/requests/blob/main/src/requests/utils.py#L63
https://github.com/psf/requests/blob/main/src/requests/adapters.py#L294

Do you have any reason to don't use library certifi as requests library uses?

I think it would simplify of using your library everywhere.

Beginne mit dem im Stack Overflow-Link beschriebenen Problem der Zertifikatsüberprüfung und vergleiche die Verwendung von certifi in den referenzierten requests/utils.py und requests/adapters.py. Verfolge die TLS-Einrichtung des SDKs, um den Umfang der standardmäßigen Verwendung von certifi zu bestimmen; abgeschlossen ist die Aufgabe, wenn eine dokumentierte Entscheidung sowie eine dazu passende Implementierung oder Tests für das Verhalten der Zertifikatsüberprüfung vorliegen.