chore(deps): update phpstan packages to v2

Author: renovate[bot]

composer.json

@@ -35,8 +35,8 @@
   "require-dev": {
     "phpunit/phpunit": "^10.5.11",
     "brainbits/phpcs-standard": "^7.0.1",
-    "phpstan/phpstan": "^1.10.59",
-    "phpstan/phpstan-phpunit": "^1.3.16"
+    "phpstan/phpstan": "^2.0.0",
+    "phpstan/phpstan-phpunit": "^2.0.0"
   },
   "autoload": {
     "psr-4": {