Use own Infection pipeline for PHP 8.4, since PHPUnit dropped PHPDBG coverage support

Ref: https://github.com/laminas/laminas-ci-matrix-action/blob/7f7976e6faf1ee8fcfca77cf0487cc4d0b486f11/laminas-ci.schema.json
Ref: Ocramius/DoctrineBatchUtils#392
Ref: Roave/BackwardCompatibilityCheck#741
Ref: laminas/laminas-continuous-integration-action#130
Ref: laminas/laminas-ci-matrix-action#189
Ref: sebastianbergmann/php-code-coverage#945
Ref: sebastianbergmann/php-code-coverage@c304be7

Author: Ocramius

.laminas-ci.json

@@ -1,5 +1,21 @@
 {
-  "ignore_php_platform_requirements": {
-    "8.4": true
-  }
+  "extensions": [
+    "pcov"
+  ],
+  "ini": [
+    "memory_limit=-1"
+  ],
+  "exclude": [
+    {"name": "Infection [8.2, locked]"}
+  ],
+  "additional_checks": [
+    {
+      "name": "Infection (with PCOV)",
+      "job": {
+        "php": "8.4",
+        "dependencies": "locked",
+        "command": "./vendor/bin/roave-infection-static-analysis-plugin"
+      }
+    }
+  ]
 }