Posodobitev CI/CD workflow: dodana Node.js v20 in avtomatska posodobitev package-lock.json

.gitea/workflows/build-deploy.yml

@@ -15,7 +15,10 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v3
         with:
-          node-version: '18'
+          node-version: '20'
+
+      - name: Update package lock
+        run: npm install --package-lock-only
 
       - name: Install dependencies
         run: npm ci