update from symfony security to security-core

Author: sidux

composer.json

@@ -27,7 +27,7 @@
         "symfony/dependency-injection": "~3.4 || ~4.0 || ~5.0",
         "symfony/config": "~3.4 || ~4.0 || ~5.0",
         "symfony/http-kernel": "~3.4 || ~4.0 || ~5.0",
-        "symfony/security": "~3.4 || ~4.0 || ~5.0",
+        "symfony/security-core": "~3.4 || ~4.0 || ~5.0",
         "doctrine/orm": "~2.3",
         "symfony/event-dispatcher": "~3.4 || ~4.0 || ~5.0"
     },