Add Infection testing

Author: giggsey

composer.json

@@ -65,7 +65,7 @@
   "require-dev": {
     "ext-dom": "*",
     "friendsofphp/php-cs-fixer": "^3.71",
-    "infection/infection": "^0.29.14",
+    "infection/infection": "^0.28.0",
     "pear/pear-core-minimal": "^1.10.16",
     "pear/pear_exception": "^1.0.2",
     "pear/versioncontrol_git": "^0.7",