Set verbose: true to debug twine uploads to PypI

Sometimes push to Test PyPI fails with 404. It is necessary to add
verbose to see what's happening.

https://github.com/containers/podman-py/actions/runs/13407882925/job/37451651001

Signed-off-by: Nicola Sella <nsella@redhat.com>

.github/workflows/publish-to-test-pypi.yml

@@ -122,3 +122,5 @@ jobs:
         uses: pypa/gh-action-pypi-publish@release/v1
         with:
           repository-url: https://test.pypi.org/legacy/
+          skip_existing: true
+          verbose: true