AWS supports the following Ruby runtimes:

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Name | Identifier | SDK for Ruby | Operating system
-- | -- | -- | --
Ruby 2.7 | ruby2.7 | 3.0.1 | Amazon Linux 2
Ruby 2.5 | ruby2.5 | 3.0.1 | Amazon Linux

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Currently, `localstack/lambda` only contains the `ruby2.5` tag. Will the 2.7 runtime be supported in the (near) future?
StatementId=sid, Qualifier='qual1', RevisionId='r1')
        self.assertEqual(resp['ResponseMetadata']['HTTPStatusCode'], 200)
        lambda_client.delete_function(FunctionName=function_name)
    def test_lambda_asynchronous_invocations(self):
        function_name = 'lambda_func-{}'.format(short_uid())
        testutil.create_lambda_function(
            handler_file=TEST_LAMBDA_ECHO_FILE,
            func_name=function_name,
            runtime=LAMBDA_RUNTIME_PYTHON36
        )
        lambda_client = aws_stack.connect_to_service('lambda')
        
        response = lambda_client.put_function_event_invoke_config(
            FunctionName=function_name,
            MaximumRetryAttempts=123,
            MaximumEventAgeInSeconds=123,
            DestinationConfig={
                'OnSuccess': {
                    'Destination': function_name
                },
                'OnFailure': {
                    'Destination': function_name
                }
            }
        )
        destination_config = {
            'OnSuccess': {
                'Destination': function_name
            },
            'OnFailure': {