Update nextjs.yml

Author: WarFiN123

.github/workflows/nextjs.yml

@@ -81,7 +81,7 @@ jobs:
       - name: Build with Next.js
         run: bun run build
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v5
+        uses: actions/upload-pages-artifact@v4
         with:
           path: ./out