#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.
def check_lambda_logs(self, func_name, expected_lines=[]):
        log_events = LambdaTestBase.get_lambda_logs(func_name)
        log_messages = [e['message'] for e in log_events]
        for line in expected_lines:
            if '.*' in line:
                found = [re.match(line, m) for m in log_messages]
                if any(found):
                    continue
            self.assertIn(line, log_messages)
    @staticmethod
    def get_lambda_logs(func_name):
        logs_client = aws_stack.connect_to_service('logs')
        log_group_name = '/aws/lambda/%s' % func_name
        streams = logs_client.describe_log_streams(logGroupName=log_group_name)['logStreams']
        streams = sorted(streams, key=lambda x: x['creationTime'], reverse=True)
        log_events = logs_client.get_log_events(
            logGroupName=log_group_name, logStreamName=streams[0]['logStreamName'])['events']
        return log_events
class TestLambdaBaseFeatures(unittest.TestCase):
    def test_forward_to_fallback_url_dynamodb(self):
        db_table = 'lambda-records'
        ddb_client = aws_stack.connect_to_service('dynamodb')
        def num_items():
            return len((run_safe(ddb_client.scan, TableName=db_table) or {'Items': []})['Items'])
        items_before = num_items()
        _run_forward_to_fallback_url('dynamodb://%s' % db_table)
        items_after = num_items()
        self.assertEqual(items_after, items_before + 3)
    def test_forward_to_fallback_url_http(self):
        class MyUpdateListener(ProxyListener):