fix(deps): update dependency @docsearch/css to v5

Author: renovate[bot]

package.json

@@ -16,7 +16,7 @@
   },
   "dependencies": {
     "@contentsgarten/html": "1.3.0",
-    "@docsearch/css": "^4.6.3",
+    "@docsearch/css": "^5.0.0",
     "@docsearch/react": "4.7.0",
     "@doist/typist": "16.2.0",
     "@dtinth/comparator": "1.0.0",