chore(deps): update dependency sphinx to v7.4.3

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
sphinx (changelog)	7.4.0 -> 7.4.3

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Release Notes

sphinx-doc/sphinx (sphinx)

v7.4.3

Compare Source

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

Bugs fixed

• #​12582: Restore support for list-styled :confval:source_suffix values
  with extensions that register parsers.
  Patch by Adam Turner.

v7.4.2

Compare Source

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

Bugs fixed

• #​12580, #​12583: Resolve failures with the C domain on incremental builds
  with Sphinx 7.3.7 and earlier.
  Patch by Adam Turner.

v7.4.1

Compare Source

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Dependencies

Incompatible changes

Deprecated

Features added

Bugs fixed

• Fix invalid HTML when a rubric node with invalid heading-level is used.
  Patch by Adam Turner.
• #​12579, #​12581: Restore support for typing.ParamSpec in autodoc.
  Patch by Adam Turner.

Testing

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