### Is there an existing issue for this?

- [X] I have searched the existing issues

### Feature description

Basically we want to only run the lambda when an insert is occurring in DynamoDB.
I tested using Dynobase deleting a record and the lambda still triggered.

```
resource "aws_lambda_event_source_mapping" "event-log" {
	event_source_arn  = aws_dynamodb_table.event-log.stream_arn
	function_name     = module.main.lambda-arn
	starting_position = "LATEST"
	enabled = true # change to false when truncating the table in localstack
	maximum_retry_attempts = 1 # limit retry on failure to 1 for now

	# https://dev.to/aws-builders/filtering-dynamodb-streams-before-lambda-p5p
	filter_criteria { # Doesn't seem to work on LocalStack for now
		filter {
			pattern = jsonencode({
				body = {
					eventName : ["INSERT"]
				}
			})
		}
	}
}
```


### 🧑‍💻 Implementation

_No response_

### Anything else?

 https://dev.to/aws-builders/filtering-dynamodb-streams-before-lambda-p5p
return opensearch_create_domain()
@pytest.fixture
def opensearch_endpoint(opensearch_client, opensearch_domain) -> str:
    status = opensearch_client.describe_domain(DomainName=opensearch_domain)["DomainStatus"]
    assert "Endpoint" in status
    return f"https://{status['Endpoint']}"
@pytest.fixture
def opensearch_document_path(opensearch_client, opensearch_endpoint):
    document = {
        "first_name": "Boba",
        "last_name": "Fett",
        "age": 41,
        "about": "I'm just a simple man, trying to make my way in the universe.",
        "interests": ["mandalorian armor", "tusken culture"],
    }
    document_path = f"{opensearch_endpoint}/bounty/hunters/1"
    response = requests.put(
        document_path,
        data=json.dumps(document),
        headers={"content-type": "application/json", "Accept-encoding": "identity"},
    )
    assert response.status_code == 201, f"could not create document at: {document_path}"
    return document_path
@pytest.fixture
def cleanup_stacks(cfn_client):