Bump @types/node from 22.13.14 to 22.15.8 in /samples/node-contract

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 22.13.14 to 22.15.8.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/node)

---
updated-dependencies:
- dependency-name: "@types/node"
  dependency-version: 22.15.8
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

samples/node-contract/package-lock.json

@@ -24,7 +24,7 @@
   "author": "Hyperledger",
   "license": "Apache-2.0",
   "devDependencies": {
-    "@types/node": "^22.13.14",
+    "@types/node": "^22.15.17",
     "gts": "^6.0.2",
     "typescript": "^5.8.3"
   },