Fix lowest phpunit version

Author: Gared

composer.json

@@ -30,7 +30,7 @@
     "phpdocumentor/reflection-docblock": "^5.2"
   },
   "require-dev": {
-    "phpunit/phpunit": "^10",
+    "phpunit/phpunit": "^10.5.0",
     "phpstan/phpstan": "^1.0",
     "phpstan/phpstan-phpunit": "^1.0",
     "phpstan/phpstan-strict-rules": "^1.0"