build(deps): update sphinx-autoapi requirement from <3.8.0 to <3.9.0

[dependabot]

Updates the requirements on sphinx-autoapi to permit the latest version.

Release notes

Sourced from sphinx-autoapi's releases.

v3.8.0

Features

• Autodoc-style directives can access members excluded by autoapi_options

Misc

• #553

Changelog

Sourced from sphinx-autoapi's changelog.

v3.8.0 (2026-03-07)

Features ^^^^^^^^

• Autodoc-style directives can access members excluded by autoapi_options

Misc ^^^^

• #553

v3.7.0 (2026-02-10)

Features ^^^^^^^^

• Added autoapi.import warning for when AutoAPI directives are given non-existent objects
• Adding autoapi_follow_symlinks, which allows api to traverse into symlinked directories when generating the API documentation.
• Drop support for Python 3.9 and officially support Python 3.14
• Support rendering PEP-695 type parameters

Bugfixes ^^^^^^^^

• Render typing_extensions.TypeAlias like other type aliases (#520)
• Fix PythonFunction.overloads typing when source code overload(s) do not provide a return type (#523)

Misc ^^^^

• Fix deprecation warnings raised by astroid and sphinx
• Handling case where match returns None to fix mypy unit test.

v3.6.1 (2025-10-06)

Bugfixes ^^^^^^^^

• Update the supported versions of astroid. Fix the breaking change to Import and pass in the AstroidManager to the AstroidBuilder (#536)

... (truncated)

Commits

• 75cbffd Version 3.8.0
• 7838cf6 Bump the github-actions group with 2 updates
• f1cdd30 Attempt to fix macos-latest build
• 34bb24c Autodoc-style directives can access members excluded by autoapi_options
• ccb2e89 astroid requirement is consistent across all versions of Python
• 0917ed2 Version 3.7.0
• 394beb4 Add warning for missing import
• 96cd74d Update changelog
• c248b85 Render typing_extensions.TypeAlias like other type aliases
• a2f49c9 Fix deprecation warnings raised by astroid and sphinx
• Additional commits viewable in compare view

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