Require proper monolog-bundle dependency

Author: franmomu

composer.json

@@ -27,7 +27,7 @@
         "symfony/framework-bundle": "^3.4.22 || ^4.1 || ^5.0",
         "symfony/http-foundation": "^3.4.22 || ^4.1 || ^5.0",
         "symfony/http-kernel": "^3.4.22 || ^4.1 || ^5.0",
-        "symfony/monolog-bundle": "~3.1 || ^5.0",
+        "symfony/monolog-bundle": "^3.5",
         "symfony/process": "^3.4.22 || ^4.1 || ^5.0",
         "symfony/security-bundle": "^3.4.22 || ^4.1 || ^5.0",
         "symfony/twig-bundle": "^3.4.22 || ^4.1 || ^5.0",