Update dependency @types/node to v22.15.21

Author: elastic-renovate-prod[bot]

package.json

@@ -62,7 +62,7 @@
     "@sinonjs/fake-timers": "14.0.0",
     "@types/debug": "4.1.12",
     "@types/ms": "2.1.0",
-    "@types/node": "22.15.19",
+    "@types/node": "22.15.21",
     "@types/sinonjs__fake-timers": "8.1.5",
     "@types/split2": "4.2.3",
     "@types/stoppable": "1.1.3",