Update dependency sphinx to v7.4.6

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
sphinx (changelog)	==7.4.5 -> ==7.4.6

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Release Notes

sphinx-doc/sphinx (sphinx)

### [`v7.4.6`](https://togithub.com/sphinx-doc/sphinx/blob/HEAD/CHANGES.rst#Release-746-released-Jul-18-2024) [Compare Source](https://togithub.com/sphinx-doc/sphinx/compare/v7.4.5...v7.4.6) \===================================== ## Bugs fixed - [#​12859](https://togithub.com/sphinx-doc/sphinx/issues/12859), [#​9743](https://togithub.com/sphinx-doc/sphinx/issues/9743), [#​12609](https://togithub.com/sphinx-doc/sphinx/issues/12609): autosummary: Do not add the package prefix when generating autosummary directives for modules within a package. Patch by Adam Turner. - [#​12613](https://togithub.com/sphinx-doc/sphinx/issues/12613): Reduce log severity for ambiguity detection during inventory loading. Patch by James Addison.

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