test validaotr escape sequence fix

Author: p1c2u

tests/integration/test_validators.py

@@ -282,7 +282,7 @@ def test_missing_body(self, validator):
 
     def test_invalid_media_type_value(self, validator):
         request = MockRequest(self.host_url, 'get', '/v1/pets')
-        response = MockResponse('\{\}')
+        response = MockResponse("{}")
 
         result = validator.validate(request, response)