watson: migrate to python@3.14

[daeho-ro]

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[Copilot]

Pull Request Overview

This PR migrates the watson formula from Python 3.13 to Python 3.14 and includes dependency updates and a bug fix. The changes ensure compatibility with the newer Python version while addressing a runtime error.

• Migrates from python@3.13 to python@3.14
• Updates multiple Python package dependencies to newer versions
• Adds a bug fix for a TypeError related to NoneType handling

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[github-actions]

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