fix(deps): update dependency astro to v6 [security]

Author: renovate[bot]

apps/docs/package.json

@@ -19,7 +19,7 @@
 		"@fontsource/pt-sans": "^5.0.13",
 		"@sheepdog/svelte": "workspace:*",
 		"@sveltejs/vite-plugin-svelte": "^6.0.0",
-		"astro": "^5.0.0",
+		"astro": "^6.0.0",
 		"sharp": "^0.34.0",
 		"svelte": "^5.0.0",
 		"typescript": "^5.4.5"