### 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
SWAGGER_VERSION = "2.0"
    OPENAPI_VERSION = "3.0.1"
    exporters: Dict[str, TypeExporter]
    def __init__(self):
        self.exporters = {"swagger": self._swagger_export, "oas3": self._oas3_export}
        self.export_formats = {"application/json": "to_dict", "application/yaml": "to_yaml"}
    def export_api(
        self, api_id: str, stage: str, export_type: str, export_format: str = "application/json"
    ) -> str:
        return self.exporters.get(export_type)(api_id, stage, export_format)
    @classmethod
    def _add_paths(cls, spec, resources):