Update symfony/filesystem requirement from ^4.4|^5.1 to ^4.4|^5.1|^7.0

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Diff for: composer.json

@@ -21,7 +21,7 @@
         "phpstan/phpstan": "^1.10.57",
         "phpunit/phpunit": "^10.5.10",
         "symfony/console": "^4.4|^5.1",
-        "symfony/filesystem": "^4.4|^5.1",
+        "symfony/filesystem": "^4.4|^5.1|^7.0",
         "symfony/process": "^4.4|^5.1",
         "tracy/tracy": "^2.10",
         "webmozart/glob": "^4.1"