Update dependency fastify to v4.26.0

Author: renovate[bot]

apps/backend/package.json

@@ -32,7 +32,7 @@
     "@types/got": "9.6.12",
     "@types/jsonwebtoken": "8.5.9",
     "@types/node": "16.18.24",
-    "fastify": "4.13.0",
+    "fastify": "4.26.0",
     "got": "11.8.6",
     "graphql": "16.6.0",
     "graphql-tools": "8.3.20",