### 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
log_groups.append(log_group_name)
            return resp
        
        
        return retry(_create_function, retries=3, sleep=4)
    yield _create_lambda_function
    for arn in lambda_arns:
        try:
            lambda_client.delete_function(FunctionName=arn)
        except Exception:
            LOG.debug(f"Unable to delete function {arn=} in cleanup")
    for role_name, policy_arn in role_names_policy_arns:
        try:
            iam_client.detach_role_policy(RoleName=role_name, PolicyArn=policy_arn)
            iam_client.delete_role(RoleName=role_name)
        except Exception:
            LOG.debug(f"Unable to delete role {role_name=} in cleanup")
        try:
            iam_client.delete_policy(PolicyArn=policy_arn)
        except Exception:
            LOG.debug(f"Unable to delete policy {policy_arn=} in cleanup")
    for log_group_name in log_groups:
        try:
            logs_client.delete_log_group(logGroupName=log_group_name)
        except Exception:
            LOG.debug(f"Unable to delete log group {log_group_name} in cleanup")
@pytest.fixture
def check_lambda_logs(logs_client):
    def _check_logs(func_name: str, expected_lines: List[str] = None):
        if not expected_lines: