update download artifact upload version

Author: machadojoy

.github/workflows/python-test.yml

@@ -47,7 +47,7 @@ jobs:
     needs: [test]
     steps:
     - uses: actions/checkout@v4
-    - uses: actions/download-artifact@master
+    - uses: actions/download-artifact@v4
       with:
         name: coverage-data
         path: .