fix(deps): update astro monorepo

Author: renovate[bot]

package-lock.json

@@ -18,10 +18,10 @@
   "dependencies": {
     "@astrojs/check": "^0.9.4",
     "@astrojs/rss": "^4.0.12",
-    "@astrojs/sitemap": "^3.4.2",
+    "@astrojs/sitemap": "^3.5.0",
     "@astrojs/tailwind": "^6.0.2",
     "@fontsource/arvo": "^5.2.6",
-    "astro": "^5.12.9",
+    "astro": "^5.13.2",
     "astro-icon": "^1.1.5",
     "markdown-it": "^14.1.0",
     "sanitize-html": "^2.17.0",