ci: use the latest LTS version of NodeJS (18.x)

Part of #13

Author: php-coder

.github/workflows/generate-python-app.yml

@@ -16,7 +16,7 @@ jobs:
       - name: Setup NodeJS
         uses: actions/[email protected] # https://github.com/actions/setup-node
         with:
-          node-version: 16
+          node-version: 18
           cache: 'npm'
       - name: Install project dependencies
         run: npm ci # https://docs.npmjs.com/cli/v8/commands/npm-ci