#2093  # Type of request: This is a ...

[*] bug report
[ ] feature request

# Detailed description
Unable to invoke lambda function compiled in java 11. Localstack latest image still shows java version 8.

## Expected behavior
Should be able to invoke lambda function compiled in java 11.

## Actual behavior
Getting error-
Exception in thread "main" java.lang.UnsupportedClassVersionError: publisFunction has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0

# Steps to reproduce

docker-compose up -d
Create lambda function
Create SQS 
map lambda and sqs
send message to SQS to invoke lambda

Error message SS:
![image](https://user-images.githubusercontent.com/54183749/96603894-1a561c00-12ba-11eb-9d40-a19370a7c3aa.png)

![LS_error](https://user-images.githubusercontent.com/54183749/96603954-293cce80-12ba-11eb-9566-3942f96e564a.png)


Similar issue was reported #2093.  Couldn't find the answer if that was fixed and latest image of Localstack should compile in JAVA 11.
func_name=TEST_LAMBDA_NAME_JS,
            handler_file=TEST_LAMBDA_NODEJS,
            handler='lambda_integration.handler',
            runtime=LAMBDA_RUNTIME_NODEJS810
        )
        ctx = {'custom': {'foo': 'bar'},
               'client': {'snap': ['crackle', 'pop']},
               'env': {'fizz': 'buzz'}}
        result = self.lambda_client.invoke(
            FunctionName=TEST_LAMBDA_NAME_JS, Payload=b'{}',
            ClientContext=to_str(base64.b64encode(to_bytes(json.dumps(ctx)))))
        result_data = result['Payload'].read()
        self.assertEqual(result['StatusCode'], 200)
        self.assertEqual(json.loads(json.loads(result_data)['context']['clientContext']).
                         get('custom').get('foo'), 'bar')
        
        expected = ['.*Node.js Lambda handler executing.']
        self.check_lambda_logs(TEST_LAMBDA_NAME_JS, expected_lines=expected)
        
        testutil.delete_lambda_function(TEST_LAMBDA_NAME_JS)
    def test_invoke_nodejs_lambda(self):
        if not use_docker():
            return
        handler_file = os.path.join(THIS_FOLDER, 'lambdas', 'lambda_handler.js')
        testutil.create_lambda_function(
            func_name=TEST_LAMBDA_NAME_JS,
            zip_file=testutil.create_zip_file(handler_file, get_content=True),
            runtime=LAMBDA_RUNTIME_NODEJS12X,
            handler='lambda_handler.handler'
        )