### 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_
self, context: RequestContext, transcription_job_name: TranscriptionJobName
    ) -> None:
        store = transcribe_stores[context.account_id][context.region]
        if transcription_job_name not in store.transcription_jobs:
            raise NotFoundException(
                "The requested job couldn't be found. Check the job name and try your request again."
            )
        store.transcription_jobs.pop(transcription_job_name)
    #
    
    #
    @staticmethod
    def download_model(name: str):