Bump @types/node from 18.16.6 to 20.8.7

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 18.16.6 to 20.8.7.
- [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-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -48,7 +48,7 @@
     "@types/chai": "^4.3.5",
     "@types/chai-as-promised": "^7.1.5",
     "@types/mocha": "^10.0.1",
-    "@types/node": "^18.16.3",
+    "@types/node": "^20.8.7",
     "@types/proxyquire": "^1.3.28",
     "@types/sinon": "^10.0.14",
     "@types/sinon-chai": "^3.2.9",