pyqt: migrate to [email protected]

[AdityaGarg8]

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[Copilot]

Pull Request Overview

This PR migrates the PyQt formula from Python 3.13 to Python 3.14 by updating the dependency specification and the internal python3 method reference.

• Updates the Python dependency from [email protected] to [email protected]
• Updates the internal python3 method to return "python3.14" instead of "python3.13"

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