⬆️(deps): update dependency sphinx to v7

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
sphinx (changelog)	^6.0.0 -> ^7.0.0

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Release Notes

sphinx-doc/sphinx (sphinx)

v7.0.1

Compare Source

=====================================

Dependencies

• #​11411: Support Docutils 0.20_. Patch by Adam Turner.

.. _Docutils 0.20: https://docutils.sourceforge.io/RELEASE-NOTES.html#release-0-20-2023-05-04

Bugs fixed

• #​11418: Clean up remaining references to sphinx.setup_command
  following the removal of support for setuptools.
  Patch by Willem Mulder.

v7.0.0

Compare Source

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Incompatible changes

• #​11359: Remove long-deprecated aliases for MecabSplitter and
  DefaultSplitter in sphinx.search.ja.
• #​11360: Remove deprecated make_old_id functions in domain object
  description classes.
• #​11363: Remove the Setuptools integration (build_sphinx hook in
  setup.py).
• #​11364: Remove deprecated sphinx.ext.napoleon.iterators module.
• #​11365: Remove support for the jsdump format in sphinx.search.
• #​11366: Make locale a required argument to
  sphinx.util.i18n.format_date().
• #​11370: Remove deprecated sphinx.util.stemmer module.
• #​11371: Remove deprecated sphinx.pycode.ast.parse() function.
• #​11372: Remove deprecated sphinx.io.read_doc() function.
• #​11373: Removed deprecated sphinx.util.get_matching_files() function.
• #​11378: Remove deprecated sphinx.util.docutils.is_html5_writer_available()
  function.
• #​11379: Make the env argument to Builder subclasses required.
• #​11380: autosummary: Always emit grouped import exceptions.
• #​11381: Remove deprecated style key for HTML templates.
• #​11382: Remove deprecated sphinx.writers.latex.LaTeXTranslator.docclasses
  attribute.
• #​11383: Remove deprecated sphinx.builders.html.html5_ready and
  sphinx.builders.html.HTMLTranslator attributes.
• #​11385: Remove support for HTML 4 output.

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