Revert "Bump actions/setup-node from 4 to 5 (squidfunk#8471)"

This reverts commit 56bb56c.

Author: mohannad1349

.github/workflows/build.yml

@@ -44,7 +44,7 @@ jobs:
         uses: actions/checkout@v5
 
       - name: Set up Node.js runtime
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v4
         with:
           node-version: ${{ env.NODE_VERSION }}
 
@@ -72,7 +72,7 @@ jobs:
         uses: actions/checkout@v5
 
       - name: Set up Node.js runtime
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v4
         with:
           node-version: ${{ env.NODE_VERSION }}