longer sleep before attempting PyPI download

Author: samschott

.github/workflows/publish.yml

@@ -86,6 +86,9 @@ jobs:
           do
             sleep 2
           done
+          
+          # There is delay until packages actually can be downloaded for all platforms.
+          sleep 10
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v2