Bump @types/node from 14.18.53 to 20.8.0

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 14.18.53 to 20.8.0.
- [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

@@ -30,7 +30,7 @@
     "@types/chai": "^4.3.6",
     "@types/chai-as-promised": "^7.1.6",
     "@types/mocha": "^9.1.1",
-    "@types/node": "^14.18.53",
+    "@types/node": "^20.8.0",
     "@types/proxyquire": "^1.3.29",
     "@types/sinon": "^10.0.16",
     "@types/sinon-chai": "^3.2.9",