Update dependency constraint for "symfony/framework-bundle"

Author: phansys

composer.json

@@ -34,7 +34,7 @@
         "symfony/dependency-injection": "^2.8 || ^3.0 || ^4.0",
         "symfony/event-dispatcher": "^2.8 || ^3.0 || ^4.0",
         "symfony/form": "^2.8 || ^3.0 || ^4.0",
-        "symfony/framework-bundle": "^2.8 || ^3.0 || ^4.0",
+        "symfony/framework-bundle": "^2.8.1 || ^3.0 || ^4.0",
         "symfony/http-foundation": "^2.8 || ^3.0 || ^4.0",
         "symfony/http-kernel": "^2.8 || ^3.0 || ^4.0",
         "symfony/options-resolver": "^2.8 || ^3.0 || ^4.0",