Migrate minimum Python version from 3.9 to 3.10

[manojalluri]

Summary

This pull request updates the minimum required Python version from 3.9 to 3.10 for the Map Machine project.

Changes Made

• pyproject.toml: Updated requires-python from >=3.9 to >=3.10

Motivation

Python 3.9 has reached its end-of-life (EOL) as of October 2025. This migration ensures:

• The project stays on supported Python versions with active security updates
• Users have access to newer Python features and performance improvements introduced in 3.10
• Compatibility with modern development tools and packages

Testing

• Verified the project configuration is valid
• No breaking changes expected as Python 3.10 is backward compatible with 3.9 code

Fixes #186

[enzet]

@manojalluri Hello! Thank you very much for your pull request.

Please, check also .github/workflows/test.yml file to fix GitHub pipeline.

Please, also grep documentation files, we should replace 3.9 with 3.10 everywhere. At least in README.md, doc/INSTALL.md and all doc/moi/*.moi files.

Also there is a PYTHON_MINOR_VERSION in __main__.py.

Thank you for your interest in the project!

[enzet]

Hi, @manojalluri! I cherry-picked your commit, fixed everything and merged it in #192.