official models should be able to run without version

[junsred]

the model does not seem to have a version

output, err := client.Run(ctx, "black-forest-labs/flux-schnell", inputData, nil)

error: failed to run model: version must be specified

[rmznkapar]

It seems similar to #75

[junsred]

https://replicate.com/black-forest-labs/flux-schnell/examples?input=python
API example for python clearly shows that model should simply run without a model version

output = replicate.run(
    "black-forest-labs/flux-schnell",
    input={
        "prompt": "black forest gateau cake spelling out the words \"FLUX SCHNELL\", tasty, food photography, dynamic shot",
        "go_fast": True,
        "num_outputs": 1,
        "aspect_ratio": "1:1",
        "output_format": "webp",
        "output_quality": 80
    }
)
print(output)

to be consistent with other libraries i would expect this library to work the same way.