⬆️ 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...2.0.1)

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

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

composer.json

@@ -27,7 +27,7 @@
     "ext-ctype": "*"
   },
   "require-dev": {
-    "phpstan/phpstan": "^1.10",
+    "phpstan/phpstan": "^1.10 || ^2.0",
     "phpunit/phpunit": "^9.5",
     "symfony/yaml": "^5.3",
     "vimeo/psalm": "^5.11"