chore: bump appVersion up to latest OpenFGA release

[jon-whit]

Description

Bump appVersion up to the latest OpenFGA release v1.3.6

References

Review Checklist

• [x] I have clicked on "allow edits by maintainers".
• [x] 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]
• [x] The correct base branch is being used, if not main
• [x] I have added tests to validate that the change in functionality is working as expected

[jon-whit]

Supersedes #77