fix(deps): update dependency @astrojs/tailwind to v6

Author: renovate[bot]

apps/getting-started-astro/package.json

@@ -10,7 +10,7 @@
     "astro": "astro"
   },
   "dependencies": {
-    "@astrojs/tailwind": "^5.1.0",
+    "@astrojs/tailwind": "^6.0.0",
     "@types/canvas-confetti": "^1.6.4",
     "@xata.io/client": "^0.30.0",
     "astro": "^4.9.2",