Upgrade to Psalm 5.4

Author: trowski

composer.json

@@ -43,7 +43,7 @@
     "require-dev": {
         "amphp/phpunit-util": "^3",
         "phpunit/phpunit": "^9",
-        "psalm/phar": "^4.20",
+        "psalm/phar": "^5.4",
         "amphp/php-cs-fixer-config": "^2-dev"
     },
     "suggest": {