chore(deps-dev): bump furo from 2025.9.25 to 2025.12.19

[dependabot]

Bumps furo from 2025.9.25 to 2025.12.19.

Release notes

Sourced from furo's releases.

2025.12.19

• Bump the supported Sphinx version range

Full Changelog: pradyunsg/furo@2025.09.25...2025.12.19

Changelog

Sourced from furo's changelog.

2025.12.19 -- Harmonious Honeydew

• ✨ Add support for Sphinx 9.
• Drop support for Sphinx 6.

2025.09.25 -- Gleaming Green

• Change the dark mode code back to native.

2025.07.19 -- Frozen Flame

• ✨ Switch to accessible-pygments themes
• ✨ Prefetch the sidebar logos
• ✨ Fix flickering header drop shadow on Safari
• Add rel=edit attribute to "Edit this page" link/icon
• Bump NodeJS and npm dependency versions
• Bump Saas & Webpack major versions
• Improve current page detection to be resilient to sticky elements above header
• Modernise Sass and use @use + @forward
• Remove top of code border-radius with captions
• Remove "debug printf" for headerTop value
• Use distinct images for light and dark mode in the documentation
• Use the modern Saas Modules

2024.08.06 -- Energetic Eminence

• ✨ Add support for Sphinx 8
• ✨ Add smoother transitions between breakpoints
• Increase specificity of table-wrapper selector
• Avoid page breaks inside paragraphs

2024.07.18 -- Dull Denim

• Improve how icons are handled and aligned.
• Improve scroll event handler.
• Hide the copybutton by default.
• Fix source_view_link configuration handling.
• Fix close tag on pencil icon.

2024.05.06 -- Cheerful Cerulean

• ✨ Add new custom icons for auto mode, reflecting the currently active theme.
• ✨ Add a view this page button.
• ✨ Add colours and highlighting to "version modified" API helpers.
• ✨ Add release information to various customisation knobs.
• Make all icons bigger and use a thinner stroke with them.

2024.04.27 -- Bold Burgundy

• Add a skip to content link.

... (truncated)

Commits

• dd9e9f9 Prepare release: 2025.12.19
• d43f7e9 Update changelog
• d27cab5 Bump the supported Sphinx version range
• 12f288e Back to development
• See full diff in compare view

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (7bf5546) to head (8138b39).
⚠️ Report is 7 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #191   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            6         6           
  Lines          255       255           
  Branches        38        38           
=========================================
  Hits           255       255           

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[codspeed-hq]

Merging this PR will not alter performance

✅ 9 untouched benchmarks

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_{Comparing dependabot/pip/furo-2025.12.19 (8138b39) with main (99ba267)¹}

Footnotes

1. No successful run was found on main (7bf5546) during the generation of this report, so 99ba267 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩