Update symfony/phpunit-bridge requirement from ^6.4 || ^7.0 to ^8.0.3 (#52)

Updates the requirements on [symfony/phpunit-bridge](https://github.com/symfony/phpunit-bridge) to permit the latest version.
- [Release notes](https://github.com/symfony/phpunit-bridge/releases)
- [Changelog](https://github.com/symfony/phpunit-bridge/blob/7.4/CHANGELOG.md)
- [Commits](https://github.com/symfony/phpunit-bridge/commits/v8.0.3)

---
updated-dependencies:
- dependency-name: symfony/phpunit-bridge
  dependency-version: 8.0.3
  dependency-type: direct:development
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

composer.json

@@ -27,7 +27,7 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^10.5",
-        "symfony/phpunit-bridge": "^6.4 || ^7.0",
+        "symfony/phpunit-bridge": "^8.0.3",
         "matthiasnoback/symfony-config-test": "^5.0",
         "matthiasnoback/symfony-dependency-injection-test": "^6.1",
         "phpstan/phpstan": "^1.10",