Update dependency symfony/config to v8

| datasource | package        | from  | to    |
| ---------- | -------------- | ----- | ----- |
| packagist  | symfony/config | 7.4.3 | 8.0.3 |

Author: renovate[bot]

composer.json

@@ -6,7 +6,7 @@
         "php": "~8.3.0 || ~8.4.0 || ~8.5.0",
         "behat/behat": "^3.29.0",
         "psr/container": "^2.0.2",
-        "symfony/config": "^7.4.3",
+        "symfony/config": "^8.0.3",
         "symfony/dependency-injection": "^7.4.3"
     },
     "require-dev": {