### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

When attempting to sign some document using Localstack KMS inside a lambda container (also running on localstack), the localstack KMS listener returns some unknown error.

The KMS key and lambda containers have been created from the same CDK app deploy, and I can see all the resources in the localstack web console.

The test application I'm using to prove this behaviour is available here:
https://github.com/LukaHedt/localstack_kms_test

Instructions to run are in the main Readme, and the `/localstack/Readme.md` file.

`aws-sdk` returns an unknown error, and the localstack docker logs that I receive are available here:
https://pastebin.com/58Z3fXi3

Have done an amount of testing and can confidently claim the following:
- Have tested on multiple machines with the same outcome
- Doesn’t make a difference if I specify an ARN or a KeyID in the signing request
- Downgrading localstack versions either didn’t make a difference, or I couldn’t actually deploy a localstack container with version 0.12.20 or lower.

### Expected Behavior

KMS Sign should return a signature for the given payload.

### How are you starting LocalStack?

With a docker-compose file

### Steps To Reproduce

Test application demonstrating the current behaviour is available here:

https://github.com/LukaHedt/localstack_kms_test

Full instructions to run are in the `/localstack/Readme.md` file.


### Environment

```markdown
- OS: MacOS Monteray 12.3
- LocalStack: 0.14.0
```


### Anything else?

_No response_
stream = data["StreamSpecification"]
    enabled = stream.get("StreamEnabled")
    if enabled not in [False, "False"]:
        table_name = data["TableName"]
        view_type = stream["StreamViewType"]
        dynamodbstreams_api.add_dynamodb_stream(
            table_name=table_name,
            latest_stream_label=latest_stream_label,
            view_type=view_type,
            enabled=enabled,
        )
def dynamodb_get_table_stream_specification(table_name):
    try:
        table_schema = SchemaExtractor.get_table_schema(table_name)
        return table_schema["Table"].get("StreamSpecification")
    except Exception as e:
        LOG.info(
            "Unable to get stream specification for table %s: %s %s",
            table_name,
            e,
            traceback.format_exc(),
        )
        raise e
def dynamodb_enable_kinesis_streaming_destination(data, table_def):