Update symfony packages to v8

Author: renovate[bot]

composer.json

@@ -54,7 +54,7 @@
         "ramsey/uuid": "^4.9.1",
         "ramsey/uuid-doctrine": "^2.1.0",
         "roave/psr-container-doctrine": "^5.2.2 || ^6.0.0",
-        "symfony/var-exporter": "^6.4 || ^7.4"
+        "symfony/var-exporter": "^6.4 || ^7.4 || ^8.0"
     },
     "require-dev": {
         "dotkernel/dot-maker": "^2.0.0",
@@ -66,7 +66,7 @@
         "phpstan/phpstan-phpunit": "^2.0.8",
         "phpunit/phpunit": "^12.5.23",
         "roave/security-advisories": "dev-latest",
-        "symfony/var-dumper": "^7.4.0",
+        "symfony/var-dumper": "^8.0.0",
         "vincentlanglet/twig-cs-fixer": "^4.0.0"
     },
     "autoload": {