build(deps-dev): update nbsphinx requirement from >=0.9.4 to >=0.9.8

[dependabot]

Updates the requirements on nbsphinx to permit the latest version.

Release notes

Sourced from nbsphinx's releases.

nbsphinx 0.9.8

https://pypi.org/project/nbsphinx/0.9.8/

• Re-enable Sphinx 8.2+
• Support text/x-rst MIME type in raw cells
• Support for mathjax4_config

Changelog

Sourced from nbsphinx's changelog.

Version 0.9.8 -- 2025-11-28 -- PyPI__ -- diff__

• Re-enable Sphinx 8.2+
• Support text/x-rst MIME type in raw cells
• Support for mathjax4_config

__ https://pypi.org/project/nbsphinx/0.9.8/ __ spatialaudio/nbsphinx@0.9.7...0.9.8

Version 0.9.7 -- 2025-03-03 -- PyPI__ -- diff__

• Disable Sphinx 8.2+ (for now)

__ https://pypi.org/project/nbsphinx/0.9.7/ __ spatialaudio/nbsphinx@0.9.6...0.9.7

Version 0.9.6 -- 2024-12-24 -- PyPI__ -- diff__

• Markdown: allow lists without leading blank line

__ https://pypi.org/project/nbsphinx/0.9.6/ __ spatialaudio/nbsphinx@0.9.5...0.9.6

Version 0.9.5 -- 2024-08-13 -- PyPI__ -- diff__

• Miscellaneous fixes

__ https://pypi.org/project/nbsphinx/0.9.5/ __ spatialaudio/nbsphinx@0.9.4...0.9.5

Version 0.9.4 -- 2024-05-06 -- PyPI__ -- diff__

• Require docutils >= 0.18.1
• Minor fixes, documentation and CI updates

__ https://pypi.org/project/nbsphinx/0.9.4/ __ spatialaudio/nbsphinx@0.9.3...0.9.4

Version 0.9.3 -- 2023-08-27 -- PyPI__ -- diff__

• Fix gallery regression in Sphinx 7.2

__ https://pypi.org/project/nbsphinx/0.9.3/ __ spatialaudio/nbsphinx@0.9.2...0.9.3

Version 0.9.2 -- 2023-05-24 -- PyPI__ -- diff__

• Improve support for sphinx_immaterial theme
• Improve support for links starting with #
• Add support for in-text citations
• LaTeX: Add support for admonition titles

__ https://pypi.org/project/nbsphinx/0.9.2/ __ spatialaudio/nbsphinx@0.9.1...0.9.2

Version 0.9.1 -- 2023-03-14 -- PyPI__ -- diff__

• pandoc: disable "smart" option only for version 2.0+

... (truncated)

Commits

• 4f07420 Release 0.9.8
• 75d6770 Avoid a logging error
• dd96f11 DOC: Update URL for the <img> element
• d97c011 Add support for mathjax4_config (#854)
• 4882668 Fix nbsphinx_assume_equations to work with newer versions of Sphinx
• 95372a7 CI: use "uv" for "publish" workflow
• 9ce8c26 setup.py -> pyproject.toml
• 394b9ee DOC: use anonymous hyperlinks for embedded URLs
• ab85921 Bump actions/upload-artifact from 4 to 5
• 76122c2 Bump actions/download-artifact from 4 to 6
• Additional commits viewable in compare view

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[garrison]

Updates the requirements on nbsphinx to permit the latest version.

Umm... I think the latest version is already permitted by the current version specifier?

This same statement applies to the other PRs dependabot opened today in this repository, too.

[garrison]

This seems to be an instance of dependabot/dependabot-core#14798

[dependabot]

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version. You can also ignore all major, minor, or patch releases for a dependency by adding an ignore condition with the desired update_types to your config file.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.