Replace abandoned zendframework/zend-diactoros with same version laminas/laminas-diactoros

Author: kevinsmith

composer.json

@@ -22,8 +22,8 @@
         "psr/http-server-middleware": "^1.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "~7.0",
-        "zendframework/zend-diactoros": "~1.0"
+        "laminas/laminas-diactoros": "~1.0",
+        "phpunit/phpunit": "~7.0"
     },
     "autoload": {
         "psr-4": {