OpenAPI with `$ref` responseBodies don't get processed correctly

[ghost]

Describe the bug A clear and concise description of what the bug is.

To Reproduce Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior A clear and concise description of what you expected to happen.

OpenAPI Spec File A link to your openapi.json which produces this issue.

Desktop (please complete the following information):

• OS: [e.g. macOS 10.15.1]
• Python Version: [e.g. 3.8.0]
• openapi-python-client version [e.g. 0.1.0]

Additional context Add any other context about the problem here.

[ghost]

https://github.com/openapi-generators/openapi-python-client/pull/664 Looks like it fixes this

[supermihi]

Any news on this? Do you consider merging the fix? Is there something that blocks that?