chore(deps): bump astro from 5.14.4 to 5.15.6 (#3590)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -30,7 +30,7 @@
     "@lunariajs/core": "^0.1.1",
     "@lunariajs/starlight": "^0.1.1",
     "@types/json-schema": "^7.0.15",
-    "astro": "^5.11.0",
+    "astro": "^5.15.6",
     "astro-d2": "^0.8.0",
     "astro-feelback": "^0.3.4",
     "astrojs-service-worker": "^2.0.0",