Update dependency firebase-admin to v13

Author: renovate[bot]

web/site/package.json

@@ -46,7 +46,7 @@
     "@firebase/app-types": "^0.9.2",
     "bcros-search-test-publish": "^0.1.4",
     "firebase": "^10.12.3",
-    "firebase-admin": "^11.11.1",
+    "firebase-admin": "^13.6.0",
     "firebase-functions": "^4.9.0",
     "vuefire": "^3.1.24"
   },