Additional checks without specific PHP version uses invalid PHP version

[boesing]

Bug Report

Q	A
Version(s)	latest

Summary

When providing additional_checks without a specific PHP version, the "stable PHP version" is being used. That "stable PHP version" could be out of range of the actual project.

Current behavior

PHP 8.1 is used for an additional_checks job without an option in a project with minimum PHP 8.2 requirement.

{
    "name": "Linting [8.1, locked]",
    "operatingSystem": "ubuntu-latest",
    "action": "laminas/laminas-continuous-integration-action@v1",
    "job": {
      "command": "vendor/bin/php-parallel-lint --exclude .git/ --exclude vendor/ --no-progress .",
      "php": "8.1",
      "extensions": [],
      "ini": [],
      "dependencies": "locked",
      "ignore_platform_reqs_8": false,
      "ignore_php_platform_requirement": false,
      "additional_composer_arguments": []
    }
  }

How to reproduce

{
    "extensions": ["mysql"],
    "additional_checks": [
        {
            "name": "Linting",
            "job": {
                "command": "vendor/bin/php-parallel-lint --exclude .git/ --exclude vendor/ --no-progress .",
                "dependencies": "locked"
            }
        }
    ]
}

{
    "name": "example/example",
    "description": "Example project",
    "license": "proprietary",
    "type": "project",
    "require": {
        "php": "~8.2.0"
    },
    "require-dev": {
        "php-parallel-lint/php-parallel-lint": "^1.4"
    }
}

Expected behavior

Parallel lint is properly executed with the minimum supported PHP version of the project.

[boesing]

Temporary fix is providing a value in php property within the additional check