fix: disable auto license-file metadata generation

Setuptools auto-detects LICENSE and generates license-file metadata,
which requires packaging>=24.2 to validate. Disable this by setting
license-files = [] in [tool.setuptools]. The license is still declared
via the classifier.

Author: mrecachinas

pyproject.toml

@@ -40,6 +40,7 @@ dev = [
 [tool.setuptools]
 zip-safe = false
 packages = []
+license-files = []
 
 [tool.pytest.ini_options]
 testpaths = ["test"]