Update Node.js to v20.18.0

Author: renovate[bot]

package.json

@@ -171,7 +171,7 @@
     "node": ">= 18"
   },
   "volta": {
-    "node": "20.13.1",
+    "node": "20.18.0",
     "pnpm": "1.22.22"
   },
   "ember": {