chore(deps-dev): update phpstan/phpstan requirement from ^1.12 to ^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@1.12.0...2.0.3)

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

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

composer.json

@@ -26,7 +26,7 @@
         "laravel/pint": "^1.18",
         "pestphp/pest": "^2.36|^3.5",
         "pestphp/pest-plugin-type-coverage": "^2.8|^3.1",
-        "phpstan/phpstan": "^1.12"
+        "phpstan/phpstan": "^2.0"
     },
     "autoload": {
         "psr-4": {