build(deps-dev): bump @types/node from 20.8.4 to 20.8.6 (#29)

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 20.8.4 to 20.8.6.
- [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

@@ -32,7 +32,7 @@
   "devDependencies": {
     "@markdoc/markdoc": "^0.3.3",
     "@types/express": "^4.17.18",
-    "@types/node": "^20.8.4",
+    "@types/node": "^20.8.6",
     "nodemon": "^3.0.1",
     "ts-node": "^10.9.1",
     "typescript": "^5.2.2"