feat: prepare for phpstan v2

Signed-off-by: Bart Jaskulski <bjaskulski@protonmail.com>

composer.json

@@ -3,12 +3,12 @@
 	"description": "Meta package with PHPStan configuration for WP Desk projects",
 	"type": "phpstan-extension",
 	"require": {
-		"phpstan/phpstan": "^1.10",
+		"phpstan/phpstan": "^1.10 || ^2",
 		"phpstan/extension-installer": "^1.3",
-		"szepeviktor/phpstan-wordpress": "^1.3",
-		"phpstan/phpstan-deprecation-rules": "^1.1",
+		"szepeviktor/phpstan-wordpress": "^1.3 || ^2",
+		"phpstan/phpstan-deprecation-rules": "^1.1 || ^2",
 		"php-stubs/woocommerce-stubs": "*",
-		"phpstan/phpstan-strict-rules": "^1.5"
+		"phpstan/phpstan-strict-rules": "^1.5 || ^2",
 	},
 	"license": "MIT",
 	"authors": [