#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.
runtime=LAMBDA_RUNTIME_PYTHON36
        )
        iam_client = aws_stack.connect_to_service('iam')
        lambda_client = aws_stack.connect_to_service('lambda')
        
        action = 'lambda:InvokeFunction'
        sid = 's3'
        principal = 's3.amazonaws.com'
        resp = lambda_client.add_permission(FunctionName=function_name, Action=action,
                                            StatementId=sid, Principal=principal,
                                            SourceArn=aws_stack.s3_bucket_arn('test-bucket'))
        self.assertIn('Statement', resp)
        
        policy = lambda_client.get_policy(FunctionName=function_name)['Policy']
        self.assertIsInstance(policy, six.string_types)
        policy = json.loads(to_str(policy))
        self.assertEqual(policy['Statement'][0]['Action'], action)
        self.assertEqual(policy['Statement'][0]['Sid'], sid)
        self.assertEqual(policy['Statement'][0]['Resource'], lambda_api.func_arn(function_name))
        self.assertEqual(policy['Statement'][0]['Principal']['Service'], principal)
        self.assertEqual(policy['Statement'][0]['Condition']['ArnLike']['AWS:SourceArn'],
                         aws_stack.s3_bucket_arn('test-bucket'))
        
        policies = iam_client.list_policies(Scope='Local', MaxItems=500)['Policies']
        matching = [p for p in policies if p['PolicyName'] == 'lambda_policy_%s' % function_name]
        self.assertEqual(len(matching), 1)
        self.assertIn(':policy/', matching[0]['Arn'])
        
        resp = lambda_client.remove_permission(FunctionName=function_name,
                                               StatementId=sid, Qualifier='qual1', RevisionId='r1')