chore(deps): update dependency sphinx-autodoc-typehints to v3.13.8

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
sphinx-autodoc-typehints (changelog)	==3.13.7 → ==3.13.8

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Release Notes

tox-dev/sphinx-autodoc-typehints (sphinx-autodoc-typehints)

v3.13.8

Compare Source

What's Changed

• 🐛 fix(resolver): resolve guarded class imports by @​gaborbernat in #​775

Full Changelog: tox-dev/sphinx-autodoc-typehints@3.13.7...3.13.8

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[claude]

LGTM, straightforward dev dependency version bump.

What was reviewed: the single-line change bumping sphinx-autodoc-typehints from 3.13.7 to 3.13.8 in requirements-dev.txt (a dev/doc-build only dependency, transitively pinned via pyuspto). No other lines in the file changed, and no source code or logic is affected.

Extended reasoning...

The diff touches only requirements-dev.txt, changing one pinned version string for a documentation-build dev dependency; there is no source code, no security-sensitive surface, and no logic change. This is a routine, mechanical Renovate-bot version bump with no ambiguity or design decisions involved, so it warrants approval without requiring human review.