Update composer.json: fix php-cs-fixer script and add phpstan dependency

Author: antonmedv

composer.json

@@ -31,7 +31,7 @@
     },
     "scripts": {
         "test": "phpunit",
-        "check": "composer iphp-cs-fixer check",
+        "check": "php-cs-fixer check",
         "fix": "php-cs-fixer fix",
         "phpstan": "phpstan analyse -c phpstan.neon --memory-limit 1G",
         "phpstan:baseline": "@phpstan --generate-baseline tests/phpstan-baseline.neon"
@@ -47,6 +47,7 @@
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^3.68",
+        "phpstan/phpstan": "^2.1",
         "phpunit/php-code-coverage": "^12.0",
         "phpunit/phpunit": "^12.5"
     },