chore(deps): update symfony packages to v8

| datasource | package                 | from  | to    |
| ---------- | ----------------------- | ----- | ----- |
| packagist  | symfony/process         | 7.4.0 | 8.0.0 |
| packagist  | symfony/property-access | 7.4.0 | 8.0.0 |
| packagist  | symfony/property-info   | 7.4.0 | 8.0.0 |
| packagist  | symfony/serializer      | 7.4.0 | 8.0.0 |
| packagist  | symfony/validator       | 7.4.0 | 8.0.0 |
| packagist  | symfony/var-dumper      | 7.4.0 | 8.0.0 |


Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

composer.json

@@ -20,12 +20,12 @@
     "psr/log": "^3.0.2",
     "roave/better-reflection": "^6.66.0",
     "symfony/polyfill-mbstring": "^1.33.0",
-    "symfony/process": "^7.4.0",
-    "symfony/property-access": "^7.4.0",
-    "symfony/property-info": "^7.4.0",
-    "symfony/serializer": "^7.4.0",
+    "symfony/process": "^8.0.0",
+    "symfony/property-access": "^8.0.0",
+    "symfony/property-info": "^8.0.0",
+    "symfony/serializer": "^8.0.0",
     "symfony/service-contracts": "^3.6.1",
-    "symfony/validator": "^7.4.0",
+    "symfony/validator": "^8.0.0",
     "webmozart/assert": "^1.12.1"
   },
   "require-dev": {
@@ -46,7 +46,7 @@
     "phpunit/phpunit": "^12.4.5",
     "rector/rector": "^2.2.10",
     "roave/security-advisories": "dev-latest",
-    "symfony/var-dumper": "^7.4.0",
+    "symfony/var-dumper": "^8.0.0",
     "wmde/psr-log-test-doubles": "^3.4.0"
   },
   "prefer-stable": true,