[Security] remove conflict with symfony/security-guard

Author: alamirault

composer.json

@@ -37,7 +37,6 @@
     "conflict": {
         "symfony/event-dispatcher": "<6.4",
         "symfony/http-foundation": "<6.4",
-        "symfony/security-guard": "<6.4",
         "symfony/ldap": "<6.4",
         "symfony/validator": "<6.4"
     },