[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

setup.cfg

@@ -34,7 +34,7 @@ install_requires =
     awkward>=2
     numpy>=1.13.3
     vector
-python_requires = >=3.8
+python_requires = >=3.9
 include_package_data = True
 package_dir =
     =src