Update psalm to version 5 (#15)

Author: marvin255

composer.json

@@ -11,7 +11,7 @@
     "phpunit/phpunit": "^9.0",
     "friendsofphp/php-cs-fixer": "^3.0",
     "sebastian/phpcpd": "^6.0",
-    "vimeo/psalm": "^4.0",
+    "vimeo/psalm": "^5.0",
     "infection/infection": "^0.26.13"
   },
   "autoload": {