Docusaurus builds are failing, see: https://github.com/rancher/dashboard/actions/runs/19078807391/job/54505932172#step:4:10

There appears to be a known issue with one of the packages the latest version of Docusaurus depends on algolia/docsearch#2791

This PR updates our docusaurus package.json to use the latest working version of the docusaurus package, and pins all other versions in the package.json to the latest patch version of the given major version

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