Update composer.json

Author: enumag

composer.json

@@ -11,8 +11,8 @@
         }
     ],
     "require": {
-        "php": ">=5.6",
-        "phpunit/phpunit": ">=5.7 <8"
+        "php": ">=7.0",
+        "phpunit/phpunit": ">=6.4 <8"
     },
     "autoload": {
         "psr-4": { "MyBuilder\\PhpunitAccelerator\\": "src" }