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?
self.assertIn('END', logs)
        self.assertIn('REPORT', logs)
    def test_invocation_type_request_response(self):
        result = self.lambda_client.invoke(
            FunctionName=TEST_LAMBDA_NAME_PY,
            Payload=b'{}', InvocationType='RequestResponse'
        )
        result_data = result['Payload'].read()
        result_data = json.loads(to_str(result_data))
        self.assertEqual(result['StatusCode'], 200)
        self.assertIsInstance(result_data, dict)
    def test_invocation_type_event(self):
        result = self.lambda_client.invoke(
            FunctionName=TEST_LAMBDA_NAME_PY,
            Payload=b'{}', InvocationType='Event')
        self.assertEqual(result['StatusCode'], 202)
    def test_invocation_type_dry_run(self):
        result = self.lambda_client.invoke(
            FunctionName=TEST_LAMBDA_NAME_PY, Payload=b'{}',
            InvocationType='DryRun')
        self.assertEqual(result['StatusCode'], 204)
    def test_lambda_environment(self):
        vars = {'Hello': 'World'}
        testutil.create_lambda_function(handler_file=TEST_LAMBDA_ENV, libs=TEST_LAMBDA_LIBS,
                                        func_name=TEST_LAMBDA_NAME_ENV, runtime=LAMBDA_RUNTIME_PYTHON27, envvars=vars)
        
        result = self.lambda_client.invoke(
            FunctionName=TEST_LAMBDA_NAME_ENV, Payload=b'{}')
        result_data = result['Payload']
        self.assertEqual(result['StatusCode'], 200)