### 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
apigateway = aws_stack.connect_to_service(service_name="apigateway", region_name=region_name)
    resources = apigateway.get_resources(restApiId=rest_api_id, limit=100)
    resource_map = {}
    for resource in resources["items"]:
        path = resource.get("path")
        
        
        path = path or aws_stack.get_apigateway_path_for_resource(
            rest_api_id, resource["id"], region_name=region_name
        )
        resource_map[path] = resource
    return resource_map
#
def get_resource_for_path(path: str, path_map: Dict[str, Dict]) -> Optional[Tuple[str, dict]]:
    matches = []
    
    
    for api_path, details in path_map.items():
        api_path_regex = re.sub(r"{[^+]+\+}", r"[^\?#]+", api_path)
        api_path_regex = re.sub(r"{[^}]+}", r"[^/]+", api_path_regex)
        if re.match(r"^%s$" % api_path_regex, path):
            matches.append((api_path, details))
    
    if not matches:
        return None