PYTHON-5598 Add generate_config method to ensure auth is tested on free-threaded python 3.14t#2580

caseyclements merged 2 commits intomongodb:mastermongodb/mongo-python-driver:masterfrom

caseyclements:PYTHON-5598-separate-auth-variantcaseyclements/mongo-python-driver:PYTHON-5598-separate-auth-variantCopy head branch name to clipboard