build: update dependency firebase-admin to v14

See associated pull request for more information.

Author: angular-robot

apps/functions/package.json

@@ -14,7 +14,7 @@
     "@octokit/rest": "22.0.1",
     "@octokit/webhooks-types": "7.6.1",
     "@types/node": "24.13.2",
-    "firebase-admin": "13.10.0",
+    "firebase-admin": "14.0.0",
     "firebase-functions": "7.2.5",
     "firebase-tools": "15.20.0"
   }