Update Python range to >= 3.10, per 3.9 EOL

No effects were observed on Make-managed files.

This was missed in commit 877b5f1.

References:
* https://peps.python.org/pep-0596/

Signed-off-by: Alex Nelson <alexander.nelson@nist.gov>

Author: ajnelson-nist

setup.cfg

@@ -31,7 +31,7 @@ classifiers =
 install_requires =
     case_utils >= 0.17.0, < 0.18.0
 packages = find:
-python_requires = >=3.9
+python_requires = >=3.10
 
 [options.entry_points]
 console_scripts =