Update symfony/dependency-injection requirement from ^6.0 to ^7.1

Updates the requirements on [symfony/dependency-injection](https://github.com/symfony/dependency-injection) to permit the latest version.
- [Release notes](https://github.com/symfony/dependency-injection/releases)
- [Changelog](https://github.com/symfony/dependency-injection/blob/7.1/CHANGELOG.md)
- [Commits](symfony/dependency-injection@v6.0.0...v7.1.3)

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

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

composer.json

@@ -31,7 +31,7 @@
   "require": {
     "php": "^8.2 | ^8.3",
     "sulu/sulu": "^2.6",
-    "symfony/dependency-injection": "^6.0",
+    "symfony/dependency-injection": "^7.1",
     "symfony/framework-bundle": "^6.0",
     "symfony/http-foundation": "^6.0",
     "symfony/http-kernel": "^6.0",