Update phpstan to v2

Author: Hackwar

composer.json

@@ -16,8 +16,8 @@
     "require-dev": {
         "phpunit/phpunit": "^9.5.28",
         "squizlabs/php_codesniffer": "^3.7.2",
-        "phpstan/phpstan": "1.12.27",
-        "phpstan/phpstan-deprecation-rules": "1.2.1"
+        "phpstan/phpstan": "^2.1.17",
+        "phpstan/phpstan-deprecation-rules": "^2.0.3"
     },
     "autoload": {
         "psr-4": {