updating symfony to 6.4 + fixing maturitylevels and answerset key case

Author: Aram Hovsepyan

composer.json

@@ -117,7 +117,7 @@
   "extra": {
     "symfony": {
       "allow-contrib": false,
-      "require": "6.1.*"
+      "require": "6.*"
     },
     "hooks": {
       "pre-commit": [