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

Updates the requirements on [codeigniter/phpstan-codeigniter](https://github.com/CodeIgniter/phpstan-codeigniter) to permit the latest version.
- [Release notes](https://github.com/CodeIgniter/phpstan-codeigniter/releases)
- [Changelog](https://github.com/CodeIgniter/phpstan-codeigniter/blob/2.x/CHANGELOG.md)
- [Commits](CodeIgniter/phpstan-codeigniter@v1.3.0...v2.1.0)

---
updated-dependencies:
- dependency-name: codeigniter/phpstan-codeigniter
  dependency-version: 2.1.0
  dependency-type: direct:development
...

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

Author: dependabot[bot]

composer.json

@@ -30,7 +30,7 @@
     },
     "require-dev": {
         "boundwize/structarmed": "^0.12.0",
-        "codeigniter/phpstan-codeigniter": "^1.3",
+        "codeigniter/phpstan-codeigniter": "^1.3 || ^2.0",
         "codeigniter4/devkit": "^1.3",
         "codeigniter4/framework": ">=4.3.5 <4.5.0 || ^4.5.1",
         "firebase/php-jwt": "^7.0.3",