Update workflow node version

Author: extremeheat

.github/workflows/update-helper.yml

@@ -14,7 +14,7 @@ jobs:
     - name: Set up Node.js
       uses: actions/setup-node@master
       with:
-        node-version: 16.0.0
+        node-version: 18.0.0
     - name: Install Github Actions toolkit
       run: npm i @actions/github
     # The env vars contain the relevant trigger information, so we don't need to pass it