Bump sphinx-autodoc-typehints from 1.11.0 to 1.11.1 (#683)

Bumps [sphinx-autodoc-typehints](https://github.com/agronholm/sphinx-autodoc-typehints) from 1.11.0 to 1.11.1.
- [Release notes](https://github.com/agronholm/sphinx-autodoc-typehints/releases)
- [Changelog](https://github.com/agronholm/sphinx-autodoc-typehints/blob/master/CHANGELOG.rst)
- [Commits](agronholm/sphinx-autodoc-typehints@1.11.0...1.11.1)

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Author: dependabot-preview[bot]