upping zend-diactoros to v2

Author: samsonasik

composer.json

@@ -19,10 +19,10 @@
         "psr/container": "^1.0",
         "seld/jsonlint": "^1.5",
         "zendframework/zend-db": "^2.5",
-        "zendframework/zend-diactoros": "^1.8.1",
+        "zendframework/zend-diactoros": "^2.0",
         "zendframework/zend-log": "^2.5",
         "zendframework/zend-mail": "^2.9",
-        "zendframework/zend-psr7bridge": "^1.0",
+        "zendframework/zend-psr7bridge": "^1.1",
         "zendframework/zend-text": "^2.5"
     },
     "require-dev": {