Merge pull request #80 from enricobono/support-symfony-6

Support both Symfony 6 and 7

Author: enricobono

composer.json

@@ -19,7 +19,7 @@
   "require" : {
     "php" : ">=8.1",
     "thecodingmachine/graphqlite" : "^7.0 || ^8.0",
-    "symfony/validator": "^7"
+    "symfony/validator": "^6.4 || ^7"
   },
   "require-dev": {
     "phpunit/phpunit": "^11",