Trying to disable automatic CI pipeline, which tries to use phpdbg for coverage

Trying to chase @lcobucci's work on Roave/BackwardCompatibilityCheck#741

See schema:

* https://github.com/laminas/laminas-ci-matrix-action/blob/7f7976e6faf1ee8fcfca77cf0487cc4d0b486f11/laminas-ci.schema.json

This commit should:

* remove automatic infection pipeline entry
* add infection run via `pcov` coverage driver

Fixes:

```
 Error: ] Project tests must be in a passing state before running Infection.
         Infection runs the test suite in a RANDOM order. Make sure your tests
         do not have hidden dependencies.

         You can add these attributes to `phpunit.xml` to check it: <phpunit
         executionOrder="random" resolveDependencies="true" ...

         If you don't want to let Infection run tests in a random order, set the
         `executionOrder` to some value, for example <phpunit
         executionOrder="default"

         Check the executed command to identify the problem:
         '/usr/bin/phpdbg8.2' '-qrr' '/github/workspace/vendor/bin/phpunit'
         '--configuration'
         '/tmp/infection/phpunitConfiguration.initial.infection.xml'
         '--coverage-xml=/tmp/infection/coverage-xml'
         '--log-junit=/tmp/infection/junit.xml'
         PHPUnit reported an exit code of 1.
```

Author: Ocramius

.laminas-ci.json

@@ -0,0 +1,22 @@
+{
+  "extensions": [
+    "bcmath",
+    "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"
+      }
+    }
+  ]
+}