Update symfony/event-dispatcher requirement from ^5.4|^6.0 to ^6.1.0

Updates the requirements on [symfony/event-dispatcher](https://github.com/symfony/event-dispatcher) to permit the latest version.
- [Release notes](https://github.com/symfony/event-dispatcher/releases)
- [Changelog](https://github.com/symfony/event-dispatcher/blob/6.1/CHANGELOG.md)
- [Commits](https://github.com/symfony/event-dispatcher/commits/v6.1.0)

---
updated-dependencies:
- dependency-name: symfony/event-dispatcher
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

composer.json

@@ -67,7 +67,7 @@
         "symfony/config": "^5.4|^6.0",
         "symfony/console": "^5.4|^6.0",
         "symfony/dependency-injection": "^6.1.3",
-        "symfony/event-dispatcher": "^5.4|^6.0",
+        "symfony/event-dispatcher": "^6.1.0",
         "symfony/http-kernel": "^6.1.3",
         "symfony/polyfill-mbstring": "^1.12"
     },