Update dependency symfony/phpunit-bridge to v8

Author: renovate[bot]

vendor-bin/tools/composer.json

@@ -14,7 +14,7 @@
         "phpstan/phpstan-strict-rules": "^2.0",
         "phpstan/phpstan-symfony": "^2.0",
         "phpunit/phpunit": "^12.0",
-        "symfony/phpunit-bridge": "^7.0"
+        "symfony/phpunit-bridge": "^8.0"
     },
     "config": {
         "allow-plugins": {