The patch is already applied in the version of python-certifi in debian 12.
Debian's python-certifi is patched to return the location of Debian-provided CA certificates
https://security-tracker.debian.org/tracker/CVE-2023-37920
https://salsa.debian.org/debian/python-certifi/-/blob/debian/2022.9.24-1/debian/patches/0001-Use-Debian-provided-etc-ssl-certs-ca-certificates.crt.patch?ref_type=tags