### 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
assert "awsRegion" in record
                assert "kinesis" in record
                actual_record_data = base64.b64decode(record["kinesis"]["data"]).decode("utf-8")
                assert actual_record_data == record_data
        finally:
            lambda_client.delete_event_source_mapping(UUID=uuid)
    @patch.object(config, "SYNCHRONOUS_KINESIS_EVENTS", False)
    def test_kinesis_event_source_mapping_with_async_invocation(
        self,
        lambda_client,
        kinesis_client,
        create_lambda_function,
        kinesis_create_stream,
        wait_for_stream_ready,
        logs_client,
        lambda_su_role,
    ):
        
        
        
        try:
            function_name = f"lambda_func-{short_uid()}"
            stream_name = f"test-foobar-{short_uid()}"
            num_records_per_batch = 10
            num_batches = 2
            create_lambda_function(
                handler_file=TEST_LAMBDA_PARALLEL_FILE,
                func_name=function_name,
                runtime=LAMBDA_RUNTIME_PYTHON36,
                role=lambda_su_role,