fix and update composer.json

Author: argayash

composer.json

@@ -28,8 +28,8 @@
         "smi2/phpClickHouse": "^1.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^7.0",
-        "doctrine/coding-standard": "^4.0"
+        "doctrine/coding-standard": "^4.0",
+        "phpunit/phpunit": "^7.0"
     },
     "autoload": {
         "psr-4": {