### 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
max_version_number = next_version_number
    return get_function_version(arn, str(max_version_number))
def do_list_versions(arn):
    region = LambdaRegion.get()
    versions = [
        get_function_version(arn, version) for version in region.lambdas.get(arn).versions.keys()
    ]
    return sorted(versions, key=lambda k: str(k.get("Version")))
def do_update_alias(arn, alias, version, description=None):
    region = LambdaRegion.get()
    new_alias = {
        "AliasArn": arn + ":" + alias,
        "FunctionVersion": version,
        "Name": alias,
        "Description": description or "",
        "RevisionId": str(uuid.uuid4()),
    }
    region.lambdas.get(arn).aliases[alias] = new_alias
    return new_alias
def run_lambda(
    func_arn,
    event,
    context=None,
    version=None,
    suppress_output=False,
    asynchronous=False,
    callback=None,
    lock_discriminator: str = None,
) -> InvocationResult:
    if context is None: