fix(deps): update dependency astro to v6.4.6 [security]

Author: renovate[bot]

package.json

@@ -23,7 +23,7 @@
 		"@tailwindcss/vite": "4.3.0",
 		"@vercel/analytics": "^2.0.1",
 		"@vercel/speed-insights": "^2.0.0",
-		"astro": "6.4.4",
+		"astro": "6.4.6",
 		"astro-expressive-code": "^0.42.0",
 		"astro-icon": "^1.1.5",
 		"astro-robots-txt": "^1.0.0",