MAGETWO-89388: Update zendframework/zend-code

Author: Joan He

lib/internal/Magento/Framework/composer.json

@@ -30,7 +30,7 @@
         "symfony/console": "~4.0.0",
         "symfony/process": "~4.0.0",
         "tedivm/jshrink": "~1.3.0",
-        "zendframework/zend-code": "^3.1.0",
+        "zendframework/zend-code": "~3.3.0",
         "zendframework/zend-crypt": "^2.6.0",
         "zendframework/zend-http": "^2.6.0",
         "zendframework/zend-mvc": "~2.6.3",