### 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_
for record in records:
            if record["dynamodb"].get("StreamViewType"):
                if "SequenceNumber" not in record["dynamodb"]:
                    record["dynamodb"]["SequenceNumber"] = str(
                        dynamodbstreams_api.DynamoDBStreamsBackend.SEQUENCE_NUMBER_COUNTER
                    )
                    dynamodbstreams_api.DynamoDBStreamsBackend.SEQUENCE_NUMBER_COUNTER += 1
                
                if record["dynamodb"]["StreamViewType"] == "KEYS_ONLY":
                    record["dynamodb"].pop("OldImage", None)
                    record["dynamodb"].pop("NewImage", None)
                
                elif record["dynamodb"]["StreamViewType"] == "NEW_IMAGE":
                    record["dynamodb"].pop("OldImage", None)
                
                elif record["dynamodb"]["StreamViewType"] == "OLD_IMAGE":
                    record["dynamodb"].pop("NewImage", None)
        return records
    @classmethod
    def is_kinesis_stream_exists(cls, stream_arn):
        kinesis = aws_stack.connect_to_service("kinesis")
        stream_name_from_arn = stream_arn.split("/", 1)[1]
        
        filtered = list(
            filter(
                lambda stream_name: stream_name == stream_name_from_arn,
                kinesis.list_streams()["StreamNames"],