Update Schema Version for Twenty Twenty-Five (Ticket #62455)

[im3dabasia]

Trac ticket: https://core.trac.wordpress.org/ticket/62455

This PR updates the schema version for the Twenty Twenty-Five theme as per the requirements in [Ticket #62455].

Key Changes:

Updated schema version to reflect the latest standards and changes.
Schema URL: 'https://schemas.wp.org/wp/6.7/theme.json'

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[github-actions]

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