chore(deps): bump @docsearch/react from 3.9.0 to 4.0.0 (#1193)

Bumps [@docsearch/react](https://github.com/algolia/docsearch/tree/HEAD/packages/docsearch-react) from 3.9.0 to 4.0.0.
- [Release notes](https://github.com/algolia/docsearch/releases)
- [Changelog](https://github.com/algolia/docsearch/blob/main/CHANGELOG.md)
- [Commits](https://github.com/algolia/docsearch/commits/v4.0.0/packages/docsearch-react)

---
updated-dependencies:
- dependency-name: "@docsearch/react"
  dependency-version: 4.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package.json

@@ -15,7 +15,7 @@
     "@bugsnag/js": "^8.4.0",
     "@bugsnag/plugin-react": "^7.16.2",
     "@docsearch/css": "^3.9.0",
-    "@docsearch/react": "3",
+    "@docsearch/react": "4",
     "@reach/router": "^1.3.4",
     "classnames": "^2.2.6",
     "gatsby": "^5.15.0",