chore(deps): update dependency fastify to v5

Author: renovate[bot]

package-lock.json

@@ -32,7 +32,7 @@
     "@nestjs/common": "10.4.6",
     "@nestjs/platform-fastify": "10.4.6",
     "@nestjs/testing": "10.4.6",
-    "fastify": "4.28.1",
+    "fastify": "5.1.0",
     "mercurius": "14.1.0",
     "mercurius-integration-testing": "9.0.0"
   },
@@ -42,7 +42,7 @@
     "@mercuriusjs/gateway": "^1.0.0 || ^2.0.0 || ^3.0.0",
     "@nestjs/common": "^9.3.8 || ^10.0.0",
     "@nestjs/graphql": "^12.0.0",
-    "fastify": "^4.12.0",
+    "fastify": "^4.12.0 || ^5.0.0",
     "graphql": "^16.0.0",
     "mercurius": "^12.0.0 || ^13.0.0 || ^14.0.0"
   },