chore(java-sdk): add publish workflow

[booniepepper]

Description

References

Closes: #202

Generated version: https://github.com/openfga/java-sdk/pull/13

Review Checklist

• [ ] I have clicked on "allow edits by maintainers".
• [ ] I have added documentation for new/changed functionality in this PR or in a PR to openfga.dev [Provide a link to any relevant PRs in the references section above]
• [ ] The correct base branch is being used, if not main
• [ ] I have added tests to validate that the change in functionality is working as expected

[booniepepper]

Note: Gradle 8.3 has been released. Might consider upgrading here