Bumped phpunit version

Author: robiningelbrecht

composer.json

@@ -19,7 +19,7 @@
     "php": "^8.1",
     "ext-simplexml": "*",
     "ext-xmlreader": "*",
-    "phpunit/phpunit": "^10.1",
+    "phpunit/phpunit": "^10.3",
     "symfony/console": "^5.4||^6.2"
   },
   "autoload": {