Bump versions for dev libraries to improve PHP 8.0 support

Author: gregkos

composer.json

@@ -19,9 +19,9 @@
         "php": "^7.4|^8.0"
     },
     "require-dev": {
-        "friendsofphp/php-cs-fixer": "^2.16",
-        "phpunit/phpunit": "^9.3",
-        "vimeo/psalm": "^3.11"
+        "friendsofphp/php-cs-fixer": "^2.17",
+        "phpunit/phpunit": "^9.5",
+        "vimeo/psalm": "^4.3"
     },
     "autoload": {
         "psr-4": {