Update taffy requirement from 0.7 to 0.9

[dependabot]

Updates the requirements on taffy to permit the latest version.

Changelog

Sourced from taffy's changelog.

0.9.0

Support for named grid lines and grid areas

Taffy now supports named grid lines and areas.

As these rely on arbitrary user-provided strings, Taffy's Style struct is now generic over a string-like type (via the CheapCloneStr trait). Additionally as the grid feature is optional, it has a PhantomData field of that type to make type inference work.

Changed

• PrintTree and RoundTree: use Layout instead of &Layout (#849).
• Renamed TrackSizingFunction to GridTemplateComponent
• Renamed NonRepeatingTrackSizingFunction to TrackSizingFunction
• The Repeat variant of GridTemplateComponent now contains a new GridTemplateRepetition struct, which allows line names to be specifed in addition to tracks.
• The way that grid styles are exposed in the low-level API is now a lot more generic with many associated types.

Added

• GridTemplateArea struct and Style::grid_template_areas field
• Style::grid_template_column_names and Style::grid_template_row_names fields. If non-empty, these should have length of exactly one greater than the corresponding grid_template_column/grid_template_rows style.

0.8.3

Fixed

• Fix serde feature on 32bit targets (#845)

0.8.2

Fixed

• Fix: Calculate correct new grid size when expanding cell_occupancy_matrix in the negative direction (#843)

0.8.1

Added

• Impl GridItemStyle and BlockContainerStyle for Style (#832).

0.8.0

Highlights

The big feature in this release is support for calc() values in the low-level API.

To use this API:

... (truncated)

Commits

• 599b1b7 Prepare for v0.9.0 release (#856)
• 6408bd7 PrintTree and RoundTree: use Layout instead of &Layout (#849)
• c3e8000 CSS Grid: named lines and areas (#840)
• 8e283d8 Update criterion requirement from 0.6 to 0.7 (#854)
• d600496 Update criterion requirement from 0.5 to 0.6 (#838)
• b17d668 Update fantoccini requirement from 0.21.0 to 0.22.0 (#848)
• 52d4629 Update grid requirement from 0.17.0 to 0.18.0 (#850)
• 8880339 Clippy (June 2025) (#852)
• a31a40b Prepare for v0.8.3 release (#846)
• 5f6a8b1 Fix serde feature on 32bit targets (#845)
• Additional commits viewable in compare view

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