chore(deps): update astro monorepo (#141)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package-lock.json

@@ -103,7 +103,7 @@
     "zod": "4.1.12"
   },
   "devDependencies": {
-    "@astrojs/mdx": "4.3.11",
+    "@astrojs/mdx": "4.3.12",
     "@astrojs/starlight": "0.36.2",
     "@commitlint/cli": "20.1.0",
     "@commitlint/config-conventional": "20.0.0",
@@ -114,7 +114,7 @@
     "@types/wallabyjs": "0.0.15",
     "@types/yargs": "17.0.35",
     "asciinema-player": "3.12.1",
-    "astro": "5.15.9",
+    "astro": "5.16.0",
     "bupkis": "0.13.0",
     "cspell": "9.3.2",
     "eslint": "9.39.1",