### 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
parameters:
    """
    region = LambdaRegion.get()
    arn = func_arn(function)
    lambda_details = region.lambdas.get(arn)
    if not lambda_details:
        return not_found_error(arn)
    result = format_func_details(lambda_details)
    return jsonify(result)
@app.route("%s/functions/<function>/configuration" % API_PATH_ROOT, methods=["PUT"])
def update_function_configuration(function):
    """Update the configuration of an existing function
    ---
    operationId: 'updateFunctionConfiguration'
    parameters:
        - name: 'request'
          in: body
    """
    region = LambdaRegion.get()
    data = json.loads(to_str(request.data))
    arn = func_arn(function)
    
    LAMBDA_EXECUTOR.cleanup(arn)
    lambda_details = region.lambdas.get(arn)
    if not lambda_details:
        return not_found_error('Unable to find Lambda function ARN "%s"' % arn)
    if data.get("Handler"):
        lambda_details.handler = data["Handler"]
    if data.get("Runtime"):
        lambda_details.runtime = data["Runtime"]