[TASK] Update friendsofphp/php-cs-fixer requirement (#182)

Updates the requirements on [friendsofphp/php-cs-fixer](https://github.com/PHP-CS-Fixer/PHP-CS-Fixer) to permit the latest version.
- [Release notes](https://github.com/PHP-CS-Fixer/PHP-CS-Fixer/releases)
- [Changelog](https://github.com/PHP-CS-Fixer/PHP-CS-Fixer/blob/master/CHANGELOG.md)
- [Commits](PHP-CS-Fixer/PHP-CS-Fixer@v3.70.2...v3.71.0)

---
updated-dependencies:
- dependency-name: friendsofphp/php-cs-fixer
  dependency-type: direct:development
...

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

Author: dependabot[bot]

composer.json

@@ -19,7 +19,7 @@
         "behat/behat": "^3.19",
         "dvdoug/behat-code-coverage": "^5.3.7",
         "ergebnis/composer-normalize": "^2.45.0",
-        "friendsofphp/php-cs-fixer": "^3.70.2",
+        "friendsofphp/php-cs-fixer": "^3.71.0",
         "phpstan/extension-installer": "^1.4.3",
         "phpstan/phpstan": "^1.12.8",
         "phpstan/phpstan-deprecation-rules": "^1.2",