Publish library to pypi with OIDC

[Yang-33]

GitHub supports deployments using OIDC as of 2023. PyPI has also released functionality to integrate with this. As a result, it should be possible to publish without a personal access token.

I have already registered this repository, workflow, and environment with PyPI.

• https://pypi.org/manage/project/line-bot-sdk/settings/publishing/

reference

• https://docs.github.com/en/actions/security-for-github-actions/security-hardening-your-deployments/configuring-openid-connect-in-pypi
• https://packaging.python.org/en/latest/guides/publishing-package-distribution-releases-using-github-actions-ci-cd-workflows/
• https://docs.pypi.org/trusted-publishers/