#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.
self.assertEqual(resp['ResponseMetadata']['HTTPStatusCode'], 200)
        lambda_client.delete_function(FunctionName=function_name)
    def test_add_lambda_multiple_permission(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
        )
        iam_client = aws_stack.connect_to_service('iam')
        lambda_client = aws_stack.connect_to_service('lambda')
        
        action = 'lambda:InvokeFunction'
        principal = 's3.amazonaws.com'
        statement_ids = ['s4', 's5']
        for sid in statement_ids:
            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)
        
        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'])
        
        policy = matching[0]
        versions = iam_client.list_policy_versions(PolicyArn=policy['Arn'])['Versions']
        self.assertEqual(len(versions), 1)
        statements = versions[0]['Document']['Statement']