deps: Update dependency validate-pyproject to >=0.25,<0.26

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
validate-pyproject	feature-lint	minor	>=0.24.1,<0.25 → >=0.25,<0.26

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Release Notes

abravalheri/validate-pyproject (validate-pyproject)

v0.25

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• Add PEP 794 support by :user:henryiii (:pr:271)
• Fix broken store loading if properties is nested by :user:henryiii (:pr:281)
• Fix more integer types by :user:henryiii (:pr:282)
• Allow package-data for stubs packages by :user:cdce8p (:pr:248)
• Tested on Python 3.14 by :user:cclauss (:pr:265)
• Several testing and CI improvements including contributions from
  :user:henryiii, :user:udifuchs and :user:cclaus.

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