### 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
tables = []
    def factory(**kwargs):
        kwargs["client"] = dynamodb_client
        if "table_name" not in kwargs:
            kwargs["table_name"] = "test-table-%s" % short_uid()
        if "partition_key" not in kwargs:
            kwargs["partition_key"] = "id"
        tables.append(kwargs["table_name"])
        return create_dynamodb_table(**kwargs)
    yield factory
    
    for table in tables:
        try:
            
            dynamodb_wait_for_table_active(table)
            dynamodb_client.delete_table(TableName=table)
        except Exception as e:
            LOG.debug("error cleaning up table %s: %s", table, e)
@pytest.fixture
def s3_create_bucket(s3_client, s3_resource):