feat: Bump symfony/validator to v6.4+

Author: pepamartinec

composer.json

@@ -30,7 +30,7 @@
         "guzzlehttp/guzzle": "^6.3|^7.2",
         "myclabs/php-enum": "^1.8",
         "psr/log": "^2|^3",
-        "symfony/validator": "^5.2|^6.0"
+        "symfony/validator": "^6.4|^7.0"
     },
     "require-dev": {
         "infection/infection": "^0.26",