build(deps-dev): update phpstan/phpstan requirement from ^1.10 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@1.10.0...2.0.2)

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

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

composer.json

@@ -73,7 +73,7 @@
     "hyperf/testing": "3.1.*",
     "hyperf/watcher": "3.1.*",
     "mockery/mockery": "^1.0",
-    "phpstan/phpstan": "^1.10",
+    "phpstan/phpstan": "^2.0",
     "swoole/ide-helper": "^5.0",
     "zircote/swagger-php": "4.10.6"
   },