security/py-social-auth-core: Update to 4.4.1

• Simplify "do-test" target by switching to USE_PYTHON=pytest

Changelogs since 4.3.0:

https://github.com/python-social-auth/social-core/releases/tag/4.4.1
https://github.com/python-social-auth/social-core/releases/tag/4.4.0

PR: 270527
Approved by: ultima (maintainer)
MFH: 2023Q2

(cherry picked from commit caa68edc0c9ae32299496305f5fb88497c3ba273)