Fix Python 3.13 workflows

[Amar3tto]

Fixes #31285, Fixes #30760
Successful runs: https://github.com/apache/beam/actions/runs/18283812412/job/52053326989, https://github.com/apache/beam/actions/runs/18284043559

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Summary of Changes

Hello @Amar3tto, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request focuses on integrating and stabilizing support for Python 3.13 within the project's build and testing infrastructure. It addresses compatibility issues by updating key dependencies like scikit-learn and pandas, ensures that Python 3.13 Docker containers can be built, and updates documentation to reflect these changes, thereby maintaining the project's compatibility with the latest Python versions.

Highlights

• Python 3.13 Workflow Integration: Enabled the build and testing workflows for Python 3.13 by adding its Docker container target to the Gradle build system and updating relevant documentation.
• Dependency Updates: Updated the scikit-learn dependency to version 1.7.1 in various Python examples and requirements, and bumped pandas to 2.3.3 within the Python 3.13 specific container requirements.
• New Gradle Task for Python 3.13: Introduced a new Gradle task, postCommitPyDep, specifically for the Python 3.13 test suites.

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[jrmccluskey]

LGTM

[github-actions]

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