### 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
                entries = [
                    {"Id": r["receiptHandle"], "ReceiptHandle": r["receiptHandle"]}
                    for r in records
                    if r["messageId"] in messages_to_delete
                ]
            else:
                entries = [
                    {"Id": r["receiptHandle"], "ReceiptHandle": r["receiptHandle"]} for r in records
                ]
            try:
                sqs_client.delete_message_batch(QueueUrl=queue_url, Entries=entries)
            except Exception as e:
                LOG.info(
                    "Unable to delete Lambda events from SQS queue "
                    + "(please check SQS visibility timeout settings): %s - %s" % (entries, e)
                )
        for msg in messages:
            message_attrs = message_attributes_to_lower(msg.get("MessageAttributes"))
            record = {
                "body": msg.get("Body", "MessageBody"),
                "receiptHandle": msg.get("ReceiptHandle"),
                "md5OfBody": msg.get("MD5OfBody") or msg.get("MD5OfMessageBody"),
                "eventSourceARN": queue_arn,
                "eventSource": lambda_executors.EVENT_SOURCE_SQS,
                "awsRegion": region,
                "messageId": msg["MessageId"],
                "attributes": msg.get("Attributes", {}),
                "messageAttributes": message_attrs,