Add python_requires to package metadata (#23604)

### Description
Support for python 3.8 and python 3.9 was dropped at 1.20. Declare the
3.10 requirement in metadata

### Motivation and Context
Helps solvers like uv and poetry to build accurate solutions eg see
python-poetry/poetry#10151,
astral-sh/uv#11274

Author: dimbleby

setup.py

@@ -784,6 +784,7 @@ def save_build_and_package_info(package_name, version_number, cuda_version, rocm
     download_url="https://github.com/microsoft/onnxruntime/tags",
     data_files=data_files,
     install_requires=install_requires,
+    python_requires=">=3.10",
     keywords="onnx machine learning",
     entry_points={
         "console_scripts": [