chore(deps): update phpstan-wordpress to stable version

Author: sectsect

composer.json

@@ -20,7 +20,7 @@
     "squizlabs/php_codesniffer": "^3.7",
     "wp-coding-standards/wpcs": "^3.0",
     "phpstan/phpstan": "^2.0",
-    "szepeviktor/phpstan-wordpress": "2.x-dev",
+    "szepeviktor/phpstan-wordpress": "^2.0",
     "phpstan/extension-installer": "^1.3",
     "phpstan/phpstan-deprecation-rules": "^2.0"
   },