tweak setup-node

Author: ephys

.github/workflows/ci.yml

@@ -10,7 +10,7 @@ jobs:
         id: setup-node
         uses: actions/setup-node@v4
         with:
-          node-version-file: package.json
+          node-version: 20.x
           cache: yarn
       - name: Test Local Action
         id: test-action