### 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_
buckets = []
    def factory(**kwargs) -> str:
        if "Bucket" not in kwargs:
            kwargs["Bucket"] = "test-bucket-%s" % short_uid()
        s3_client.create_bucket(**kwargs)
        buckets.append(kwargs["Bucket"])
        return kwargs["Bucket"]
    yield factory
    
    for bucket in buckets:
        try:
            bucket = s3_resource.Bucket(bucket)
            bucket.objects.all().delete()
            bucket.object_versions.all().delete()
            bucket.delete()
        except Exception as e:
            LOG.debug("error cleaning up bucket %s: %s", bucket, e)
@pytest.fixture
def s3_bucket(s3_client, s3_create_bucket) -> str: