Downbump deps for PHP 8.1 compatibility

Author: curry684

composer.json

@@ -29,7 +29,7 @@
     "require-dev": {
         "ekino/phpstan-banned-code": "^2.1",
         "friendsofphp/php-cs-fixer": "^3.65.0",
-        "infection/infection": "^0.29.10",
+        "infection/infection": "^0.29.6",
         "phpstan/extension-installer": "^1.4.3",
         "phpstan/phpstan": "^1.12.13",
         "phpstan/phpstan-phpunit": "^1.4.2",