setup-node action is still v4

Author: brandonaaron

.github/workflows/ci.yml

@@ -9,7 +9,7 @@ jobs:
     steps:
       - uses: actions/checkout@v5
 
-      - uses: actions/setup-node@v5
+      - uses: actions/setup-node@v4
         with:
           node-version-file: '.node-version'