Trigger workflow of python packaging by Release

Currently Release triggers the following workflows:
* [Release](https://github.com/fixstars/ion-kit/actions/workflows/release.yml)
* [Upload Python Package](https://github.com/fixstars/ion-kit/actions/workflows/python_publish.yml)

However, `Upload Python Package` requires binaries built in `Release`, and it always fails once the job, requiring a manual re-run. In the worst case, the job remains in a failed status, and python package is not available.

The workflow should be `Release` -> `Upload Python Package`

Inspect the workflow definitions linked in the issue, release.yml and python_publish.yml, and trace how Release currently starts both jobs. Verify the dependency between them and confirm that Upload Python Package waits for the Release artifacts before running and completes without a manual rerun.

Written by the indexing model from the issue text.