Bump @types/node from 20.5.1 to 20.5.6

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 20.5.1 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] <support@github.com>

package.json

@@ -25,7 +25,7 @@
   "devDependencies": {
     "@types/bcrypt": "^5.0.0",
     "@types/express": "^4.17.17",
-    "@types/node": "^20.5.1",
+    "@types/node": "^20.5.6",
     "@types/nodemailer": "^6.4.9",
     "@types/speakeasy": "^2.0.7",
     "@typescript-eslint/eslint-plugin": "^6.4.1",