chore(deps): update node.js to v22.21.0 (#95)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

backend/package.json

@@ -81,6 +81,6 @@
     "reflect-metadata": "^0.2.2"
   },
   "volta": {
-    "node": "22.20.0"
+    "node": "22.21.0"
   }
 }