[X] bug report
[ ] feature request

# Detailed description

The AWS API supports Authorization parameters as GET parameters, e.g. here's a GET request to SendMessage on SQS:

```
curl 'http://localhost:4566/000000000000/SomeQueue.fifo?Action=SendMessage&MessageGroupId=Default&MessageDeduplicationId=1615597859837&MessageBody=%7B%22gateway_id%22%3A%20%2204e73c80-3539-499c-92a4-a0b106c2f6ab%22%7D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=test%2F20210313%2Fus-east-1%2Fsqs%2Faws4_request&X-Amz-Date=20210313T011059Z&X-Amz-Expires=86400000&X-Amz-SignedHeaders=host&X-Amz-Signature=2c652c7bc9a3b75579db3d987d1e6dd056f0ac776c1e1d4ec91e2ce84e5ad3ae'
```

## Expected behavior

Should send the message and return receipt information.

## Actual behavior

Returns...

```
<?xml version="1.0" encoding="UTF-8"?>
<Error>
    <Code>NoSuchBucket</Code>
    <Message>The specified bucket does not exist</Message>
    <BucketName>000000000000</BucketName>
    <RequestID>7a62c49f-347e-4fc4-9331-6e8eEXAMPLE</RequestID>
</Error>
```

queue_name = 'queue-%s' % short_uid()
        queue_url = self.client.create_queue(QueueName=queue_name)['QueueUrl']
        payload = {}
        
        
        attrs = {'attr1': {
            'StringValue': 'invalid characters, %s, %s, %s' % (chr(8), chr(11), chr(12)), 'DataType': 'String'
        }}
        with self.assertRaises(Exception):
            self.client.send_message(QueueUrl=queue_url, MessageBody=json.dumps(payload),
                                     MessageAttributes=attrs)
        
        self.client.delete_queue(QueueUrl=queue_url)
    def test_send_message_with_invalid_payload_characters(self):
        queue_name = 'queue-%s' % short_uid()
        queue_url = self.client.create_queue(QueueName=queue_name)['QueueUrl']
        
        for invalid_char in ['\0', '\v', '\f', '\u0019', '\uFFFE', '\uFFFF']:
            raw_payload = 'invalid character: ' + invalid_char
            with self.assertRaisesRegex(Exception, 'invalid characters'):
                self.client.send_message(QueueUrl=queue_url, MessageBody=raw_payload)
        raw_payload = 'valid characters: \t\n\r\uD7FF\uE000\uFFFD\u10000\u10FFFF'
        self.client.send_message(QueueUrl=queue_url, MessageBody=raw_payload)
        
        self.client.delete_queue(QueueUrl=queue_url)
    def test_dead_letter_queue_config(self):