build(deps-dev): bump @types/node from 20.5.4 to 20.5.6 (#387)

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 20.5.4 to 20.5.6.
- [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-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -14,7 +14,7 @@
   },
   "devDependencies": {
     "@types/jest": "^27.5.2",
-    "@types/node": "20.5.4",
+    "@types/node": "20.5.6",
     "@types/node-fetch": "^2.6.2",
     "@types/prettier": "3.0.0",
     "aws-cdk": "2.93.0",