chore(deps): update @docsearch/css to 3.9.0

- Updates @docsearch/css from 3.2.1 to 3.9.0
- Release notes:

Author: renovate[bot]

package-lock.json

@@ -23,7 +23,7 @@
         "@data-driven-forms/mui-component-mapper": "*",
         "@data-driven-forms/react-form-renderer": "*",
         "@date-io/date-fns": "^2.17.0",
-        "@docsearch/css": "^3.2.1",
+        "@docsearch/css": "^3.9.0",
         "@docsearch/react": "^3.9.0",
         "@emotion/cache": "^11.14.0",
         "@emotion/server": "^11.11.0",