### 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
event_source_uuid = lambda_client.create_event_source_mapping(
                EventSourceArn=stream_arn,
                FunctionName=function_name,
                StartingPosition="LATEST",
                BatchSize=num_records_per_batch,
            )["UUID"]
            _await_event_source_mapping_enabled(lambda_client, event_source_uuid)
            kinesis_client.put_records(
                Records=[
                    {"Data": json.dumps({"record_id": i}), "PartitionKey": "test"}
                    for i in range(0, num_records_per_batch)
                ],
                StreamName=stream_name,
            )
            events = _get_lambda_invocation_events(
                logs_client, function_name, expected_num_events=1
            )
            assert len(events) == 1
            lambda_client.update_event_source_mapping(UUID=event_source_uuid, Enabled=False)
            time.sleep(2)
            kinesis_client.put_records(
                Records=[
                    {"Data": json.dumps({"record_id": i}), "PartitionKey": "test"}
                    for i in range(0, num_records_per_batch)
                ],
                StreamName=stream_name,
            )
            time.sleep(7)  
            
            events = _get_lambda_invocation_events(