Setup Pub.dev credentials

Version updated for flutter-actions/setup-pubdev-credentials to version v1.0.

• This action is used across all versions by ? repositories.

Go to the GitHub Marketplace to find the latest changes.

Release notes

Initial release 🎉

Full Changelog: https://github.com/flutter-actions/setup-pubdev-credentials/commits/v1.0

• flutter-actions
• GitHub Actions