Fix version constraint

Author: nicolas-grekas

src/Symfony/Component/Console/composer.json

@@ -18,7 +18,7 @@
     "require": {
         "php": ">=5.3.9",
         "symfony/polyfill-mbstring": "~1.0",
-        "symfony/debug": "~2.7,>=2.7.2|~3.0"
+        "symfony/debug": "~2.7,>=2.7.2|~3.0.0"
     },
     "require-dev": {
         "symfony/event-dispatcher": "~2.1|~3.0.0",