Build/Test Tools: Upgrade PHPStan to version 2.2.2.

Developed in WordPress#12158.

See #64898.


git-svn-id: https://develop.svn.wordpress.org/trunk@62495 602fd350-edb4-49c9-b593-d223f7449a82

Author: westonruter

composer.json

@@ -23,7 +23,7 @@
 		"squizlabs/php_codesniffer": "3.13.5",
 		"wp-coding-standards/wpcs": "~3.3.0",
 		"phpcompatibility/phpcompatibility-wp": "~2.1.3",
-		"phpstan/phpstan": "2.1.39",
+		"phpstan/phpstan": "2.2.2",
 		"yoast/phpunit-polyfills": "^1.1.0"
 	},
 	"config": {