Fix a workflow to publish to PyPI

[c-bata]

Description

Fix a GitHub workflow to publish to PyPI.

How to Reproduce

See https://github.com/optuna/optuna-dashboard/actions/runs/3647435286

Run gh release download $(jq --raw-output .tag_name "$GITHUB_EVENT_PATH") -p '.whl' -p '.tar.gz' -D ./dist
release not found
Error: Process completed with exit code 1.

I confirmed that gh release download v0.8.0 -p '*.whl' -p '*.tar.gz' -D . /dist succeeded. So probably it was failed to get the release version.

Python version

None

Optuna version

None

optuna-dashboard version or git revision

None

Web browser

None

[c-bata]

• jq command is available in ubuntu-latest.
  • https://github.com/actions/runner-images/blob/main/images/linux/Ubuntu2004-Readme.md
• release event contains .tag_name attribute.
  • https://docs.github.com/ja/rest/releases/releases?apiVersion=2022-11-28#get-a-release