chore: bump up @docsearch/css version to v5

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@docsearch/css (source)	^4.0.0 → ^5.0.0

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Release Notes

algolia/docsearch (@​docsearch/css)

v5.1.1

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v5.1.0

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Minor Changes

• 977cf17: feat(facets): Support selecting multiple values per facet

  FacetBar now renders checkbox items instead of a radio group, so users can
  select more than one value per facet. Selected values for the same facet are
  combined into an Algolia facetFilters OR group; different facets are still
  combined with AND. Configured facetFilters OR groups that share a single
  facet key (for example ['lang:en', 'lang:fr']) are now recognized as the
  default selection for that facet, in addition to single key:value entries.

v5.0.5

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v5.0.4

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v5.0.3

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v5.0.2

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v5.0.1

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v5.0.0

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Major Changes

• ecd905d: # DocSearch v5-beta

  DocSearch v5 is a major release that introduces AI-powered answers via Agent
  Studio, a refreshed search UI, and a modernized package architecture.

v4.7.0

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Bug Fixes

• agentStudio: thread depth error message (#​2881) (f68e522)
• askai: copy the full answer instead of the first text part (#​2910) (96476dd)
• core: prevent search button from intercepting browser shortcuts when focused (#​2871) (0e41a78)
• docs: fix spelling, grammar, and formatting across docs (#​2882) (047a769)
• increase line height to avoid overlap (#​2908) (2f63848)
• modal: stop over-truncating snippets on mobile and wrap long hits (#​2907) (9ad6d16)
• sanitize Ask AI markdown HTML to prevent XSS (#​2929) (681cbfe)
• sidepanel-js: expose Agent Studio types in SidepanelProps (#​2906) (4710d0c)

Features

• askai: Ask AI deprecation warning (#​2885) (60a2c7b)
• chore: one trust cookie consent (#​2887) (17751d3)
• show page path breadcrumbs in Docusaurus search (#​2790) (d3d707d)

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