chore(deps-dev): update phpstan/phpstan requirement || ^2.0

Updates the requirements on [phpstan/phpstan](https://github.com/phpstan/phpstan) to permit the latest version.
- [Release notes](https://github.com/phpstan/phpstan/releases)
- [Changelog](https://github.com/phpstan/phpstan/blob/2.0.x/CHANGELOG.md)
- [Commits](phpstan/phpstan@1.10.0...2.0.3)

---
updated-dependencies:
- dependency-name: phpstan/phpstan
  dependency-type: direct:development
...

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

composer.json

@@ -31,7 +31,7 @@
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^3.14",
-        "phpstan/phpstan": "^1.10",
+        "phpstan/phpstan": "^1.10 || ^2.0",
         "phpunit/phpunit": "^11",
         "symfony/var-dumper": "^7.0"
     },