### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

I am using Terraform (via CDKTF) to create SNS Topics, explicitely stating that I want to use SignatureVersion 2:

```ts
const myTopic = new SnsTopic(this, 'topic', {
    name: 'myTopic',
    signatureVersion: 2,
  })
```

However, on every plan / apply, I see this logged, just like the signatureVersion wasn't set properly on the topic (see screenshot below showing the planned changes). I can also confirm that my Sns subscription receives a SignatureVersion of 1 all the time.

<img width="377" alt="image" src="https://github.com/localstack/localstack/assets/3542313/6039191e-56b3-4359-bcb3-02da94adca59">



### Expected Behavior

The SignatureVersion should be properly set on the SnsTopic to 2.

### How are you starting LocalStack?

With a docker-compose file

### Steps To Reproduce

#### How are you starting localstack (e.g., `bin/localstack` command, arguments, or `docker-compose.yml`)

docker-compose.yml

```yaml
version: '3.9'
services:
  localstack:
    container_name: "${LOCALSTACK_DOCKER_NAME-localstack_main}"
    image: localstack/localstack-pro:2.1.0
    ports:
      - "127.0.0.1:4566:4566"            # LocalStack Gateway
      - "127.0.0.1:4510-4559:4510-4559"  # external services port range
    environment:
      - DEBUG=${DEBUG-}
      - DOCKER_HOST=unix:///var/run/docker.sock
      - LOCALSTACK_API_KEY=${LOCALSTACK_API_KEY- }
      - LOCALSTACK_ENFORCE_IAM=1
    volumes:
      - "${LOCALSTACK_VOLUME_DIR:-~/.localstack-volume}:/var/lib/localstack"
      - "/var/run/docker.sock:/var/run/docker.sock"
  ```

Ran using `docker compose up -d localstack`

#### Client commands (e.g., AWS SDK code snippet, or sequence of "awslocal" commands)

NA


### Environment

```markdown
- OS: MacOs 13.3.1
- LocalStack: 2.1.0 (Pro)
```


### Anything else?

_No response_
moto_response = call_moto(context)
        subscription_arn = moto_response.get("SubscriptionArn")
        parsed_topic_arn = parse_and_validate_topic_arn(topic_arn)
        store = self.get_store(account_id=parsed_topic_arn["account"], region_name=context.region)
        
        
        for existing_topic_subscription in store.topic_subscriptions.get(topic_arn, []):
            sub = store.subscriptions.get(existing_topic_subscription, {})
            if sub.get("Endpoint") == endpoint:
                return SubscribeResponse(SubscriptionArn=sub["SubscriptionArn"])
        subscription = {
            
            "TopicArn": topic_arn,
            "Endpoint": endpoint,
            "Protocol": protocol,
            "SubscriptionArn": subscription_arn,
            "PendingConfirmation": "true",
            "Owner": context.account_id,
            "RawMessageDelivery": "false",  
        }
        if attributes:
            subscription.update(attributes)
            if "FilterPolicy" in attributes:
                store.subscription_filter_policy[subscription_arn] = json.loads(
                    attributes["FilterPolicy"]
                )
        store.subscriptions[subscription_arn] = subscription
        topic_subscription = store.topic_subscriptions.setdefault(topic_arn, [])
        topic_subscription.append(subscription_arn)