Support psalm 6

Author: gharlan

composer.json

@@ -12,10 +12,10 @@
     "require": {
         "php": "^7.3 || ^8.0",
         "ext-simplexml": "*",
-        "vimeo/psalm": "^5.0.0"
+        "vimeo/psalm": "^5.0.0 || ^6.0.0"
     },
     "require-dev": {
-        "redaxo/php-cs-fixer-config": "^2.10",
+        "redaxo/php-cs-fixer-config": "^2.13",
         "redaxo/source": "^5.12"
     },
     "autoload": {