Hi !

Ever since setuptools started supporting setup configuration files, I've been using them instead of hardcoding configuration values in the setup.py script. However, it does not seem like these files are supported by Dependabot right now.

Adding support would be fairly simple: check for setup.cfg, parse it as an INI configuration file, and check the value in setup_requires, tests_require, and install_requires just like a requirements.txt file.

I've been using Dependabot extensively for my Rust projects but this is stopping me from extending that to my Python projects as well. I'd love to see setup.cfg support implemented!