### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

When starting the transcription job in response job object is null:

<img width="1154" alt="Screenshot 2023-04-03 at 09 21 09" src="https://user-images.githubusercontent.com/454412/229447066-1671f811-da49-478d-bf24-252f30b17699.png">


### Expected Behavior

Response from the real AWS stack - job object is not null

<img width="1161" alt="Screenshot 2023-04-03 at 09 30 13" src="https://user-images.githubusercontent.com/454412/229441498-06125248-3b68-4679-8204-0163e8245db6.png">


### How are you starting LocalStack?

Custom (please describe below)

### Steps To Reproduce

Using test containers, reproducing project can be found here:

https://github.com/kkocel/local-stack-transcribe-repro

### Environment

```markdown
- OS: macOS
- LocalStack: latest
```


### Anything else?

_No response_
stream_names = []
    def _create_stream(**kwargs):
        if "StreamName" not in kwargs:
            kwargs["StreamName"] = f"test-stream-{short_uid()}"
        kinesis_client.create_stream(**kwargs)
        stream_names.append(kwargs["StreamName"])
        return kwargs["StreamName"]
    yield _create_stream
    for stream_name in stream_names:
        try:
            kinesis_client.delete_stream(StreamName=stream_name, EnforceConsumerDeletion=True)
        except Exception as e:
            LOG.debug("error cleaning up kinesis stream %s: %s", stream_name, e)
@pytest.fixture
def wait_for_stream_ready(kinesis_client):