Update PHPUnit to v11

Author: BenMorel

composer.json

@@ -31,7 +31,7 @@
         "php": "^8.2"
     },
     "require-dev": {
-        "phpunit/phpunit": "^10.5",
+        "phpunit/phpunit": "^11.0",
         "php-coveralls/php-coveralls": "^2.2",
         "guzzlehttp/guzzle": "^7.0"
     },