chore: revert phpunit version

Signed-off-by: Sebastian Krupinski <krupinski01@gmail.com>

composer.json

@@ -1,4 +1,5 @@
 {
+    "name": "ktxc/server",
     "type": "project",
     "license": "proprietary",
     "minimum-stability": "stable",
@@ -13,7 +14,7 @@
         "symfony/console": "^8.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^13.0"
+        "phpunit/phpunit": "^11.0"
     },
     "config": {
         "allow-plugins": {