fix(deps): update dependency @astrojs/starlight-tailwind to v4

Author: renovate[bot]

package.json

@@ -63,7 +63,7 @@
     "@astrojs/cloudflare": "^12.0.0",
     "@astrojs/sitemap": "^3.2.1",
     "@astrojs/starlight": "^0.30.3",
-    "@astrojs/starlight-tailwind": "^3.0.0",
+    "@astrojs/starlight-tailwind": "^4.0.0",
     "@astrojs/tailwind": "^6.0.0",
     "@expressive-code/plugin-collapsible-sections": "^0.41.0",
     "@lunariajs/core": "https://pkg.pr.new/lunariajs/lunaria/@lunariajs/core@62a858f",