### 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
event, context, main_file=main_file, lambda_function=lambda_function
                )
                return result
            lambda_handler = execute_go
    if lambda_handler:
        lambda_executors.LambdaExecutorLocal.add_function_callable(lambda_function, lambda_handler)
    return lambda_handler
def do_list_functions():
    funcs = []
    region = LambdaRegion.get()
    this_region = aws_stack.get_region()
    for f_arn, func in region.lambdas.items():
        if type(func) != LambdaFunction:
            continue
        
        func_region = f_arn.split(":")[3]
        if func_region != this_region:
            continue
        func_name = f_arn.split(":function:")[-1]
        arn = func_arn(func_name)
        lambda_function = region.lambdas.get(arn)
        if not lambda_function:
            
            continue
        details = format_func_details(lambda_function)
        details["Tags"] = func.tags
        funcs.append(details)
    return funcs
def format_func_details(
    lambda_function: LambdaFunction, version: str = None, always_add_version=False