Add CPython 3.14 to the supported wheel matrix

[mdaneri]

Summary

• add CPython 3.14 to the supported classifier and trusted validation matrix
• include 3.14 in the release wheel version list
• keep the macOS x86_64 deployment-target comparison valid for Python 3.14+

This is the upstreamable portion of the temporary Atlaso compatibility work and addresses #244. The fork-specific build and release pipeline is intentionally excluded.

Validation

• python -m ruff check setup.py
• bash -n src/release/scripts/build-wheels.sh
• local Windows CPython 3.14 wheel build from the exact 0.4.1 sdist
• clean import and UniFFI/DLL contract validation on standard Windows x64 CPython 3.14

[github-actions]

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