bump upload-artifact version

Author: diamonwiggins

.github/workflows/mlflow-ci.yml

@@ -101,7 +101,7 @@ jobs:
         if: failure()
 
       - name: Upload support bundle artifact
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         if: failure()
         with:
           name: mlflow-bundle-${{ matrix.cluster.distribution }}-${{ matrix.cluster.version }}