Python 3.9 EOL 10/2025

[asonnenschein]

Problem

The oldest version of Python that the SDK supports is v3.9 which will EOL next month, October 2025 (https://devguide.python.org/versions/).

A/C

• Bump the oldest version of Python supported by the Python SDK to v3.10.
• Update CI pipelines, tests, and any other references to Python v3.9 to v3.10.