chore(deps): upgrade dependency sphinx-autodoc-typehints to v3.9.9

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
sphinx-autodoc-typehints (changelog)	==3.9.8 → ==3.9.9

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Release Notes

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

v3.9.9

Compare Source

What's Changed

• 🐛 fix(stubs): resolve relative imports in .pyi stubs by @​gaborbernat in #​663

Full Changelog: tox-dev/sphinx-autodoc-typehints@3.9.8...3.9.9

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