Chore: upgrade to symfony 6

Author: jaapio

composer.json

@@ -22,7 +22,7 @@
     "require": {
         "php": "7.4|8.0.*|8.1.*",
         "parsica-php/parsica": "^0.8.1",
-        "symfony/property-access": "^5.4"
+        "symfony/property-access": "^5.4|^6.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^9.5"