update python req to 3.10 consistently

[glesur]

Update python requirements accross all the sources to 3.10 (this includes pydefix, tests and documentation generation)

[neutrinoceros]

Thanks !

[Copilot]

Pull request overview

Updates the documentation to consistently state Python 3.10 as the minimum version required for using the Pydefix Python interface and for building documentation.

Changes:

• Bump documented Pydefix minimum Python version from 3.8 to 3.10.
• Bump documented Idefix Python interface requirement from 3.8 to 3.10.
• Update documentation build requirements note to “Python >= 3.10”.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
doc/source/modules/pydefix.rst	Updates Pydefix installation prerequisite to Python >= 3.10.
doc/source/index.rst	Updates global docs “Python” requirements to Python >= 3.10 for Pydefix.
doc/python_requirements.txt	Updates the documented minimum Python version for docs tooling to 3.10.

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