update DI version

Author: m4tthumphrey

composer.json

@@ -24,7 +24,7 @@
 		"php":                ">=5.3.2",
 		"ext-curl":           "*",
 		"kriswallsmith/buzz": ">=0.7",
-		"symfony/dependency-injection": "2.3.*@dev"
+		"symfony/dependency-injection": "2.3.*"
 	},
 	"autoload": {
 		"psr-0": { "Gitlab\\": "lib/" }