Merge pull request #4537 from cakephp/3.0-fix-validation-requires

Fix Validation namespace requirement

src/Validation/composer.json

@@ -13,5 +13,8 @@
 			"Cake\\Validation\\": "."
 		}
 	},
-	"minimum-stability": "beta"
+	"require": {
+		"cakephp/utility": "dev-master"
+	},
+	"minimum-stability": "dev"
 }