Update symfony/filesystem requirement from ^6.0 to ^6.0 || ^7.0

Updates the requirements on [symfony/filesystem](https://github.com/symfony/filesystem) to permit the latest version.
- [Release notes](https://github.com/symfony/filesystem/releases)
- [Changelog](https://github.com/symfony/filesystem/blob/7.0/CHANGELOG.md)
- [Commits](symfony/filesystem@v6.0.0...v7.0.0)

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

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

Author: dependabot[bot]

composer.json

@@ -12,7 +12,7 @@
   "require": {
     "php": "^8.2",
     "twig/twig": "^3.0",
-    "symfony/filesystem": "^6.0"
+    "symfony/filesystem": "^6.0 || ^7.0"
   },
   "require-dev": {
     "mikey179/vfsstream": "^1.6.8"