magento-test/app/i18n/Magento/es_ES/composer.json

{
    "name": "magento/language-es_es",
    "description": "Spanish (Spain) language",
    "type": "magento2-language",
    "license": [
        "OSL-3.0",
        "AFL-3.0"
    ],
    "config": {
        "sort-packages": true
    },
    "version": "100.4.0",
    "require": {
        "magento/framework": "103.0.*"
    },
    "autoload": {
        "files": [
            "registration.php"
        ]
    }
}