feat: Upgrade Symfony version

composer.json

@@ -11,12 +11,12 @@
         "nyholm/psr7": "^1.8",
         "oat-sa/lib-lti1p3-core": "^7.0.2",
         "psr/log": "^1 || ^2 || ^3",
-        "symfony/framework-bundle": "^6.0",
+        "symfony/framework-bundle": "^6.4",
         "symfony/psr-http-message-bridge": "^2.1",
-        "symfony/security-bundle": "^6.0",
-        "symfony/security-core": "^6.0",
-        "symfony/security-http": "^6.0",
-        "symfony/yaml": "^6.0"
+        "symfony/security-bundle": "^6.4",
+        "symfony/security-core": "^6.4",
+        "symfony/security-http": "^6.4",
+        "symfony/yaml": "^6.4"
     },
     "require-dev": {
         "colinodell/psr-testlogger": "^1.2",
@@ -25,7 +25,7 @@
         "php-coveralls/php-coveralls": "^2.4",
         "phpunit/phpunit": "~9",
         "psalm/plugin-phpunit": "^0.15.1",
-        "symfony/browser-kit": "^6.0",
+        "symfony/browser-kit": "^6.4",
         "vimeo/psalm": "^4.6"
     },
     "autoload": {