Update build_publish.yml

Author: cryptobench

.github/workflows/build_publish.yml

@@ -86,7 +86,7 @@ jobs:
           python-version: '3.9'
       - uses: Gr1N/setup-poetry@v8
       - name: Retrieve the built package
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4
         with:
           name: dist
           path: dist