ci: fix version

Author: ikreymer

.github/workflows/buildapp.yaml

@@ -19,7 +19,7 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Install Node.js, NPM and Yarn
-        uses: actions/setup-node@v2
+        uses: actions/setup-node@v4
         with:
           node-version: '20'
           cache: 'yarn'