### 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
buckets = []
    def factory(**kwargs) -> str:
        if "Bucket" not in kwargs:
            kwargs["Bucket"] = "test-bucket-%s" % short_uid()
        s3_client.create_bucket(**kwargs)
        buckets.append(kwargs["Bucket"])
        return kwargs["Bucket"]
    yield factory
    
    for bucket in buckets:
        try:
            bucket = s3_resource.Bucket(bucket)
            bucket.objects.all().delete()
            bucket.object_versions.all().delete()
            bucket.delete()
        except Exception as e:
            LOG.debug("error cleaning up bucket %s: %s", bucket, e)
@pytest.fixture
def s3_bucket(s3_client, s3_create_bucket) -> str: