It looks like it’s already in composer.json and composer.lock:
composer.json: "symfony/framework-bundle": "^6", composer.lock: "symfony/framework-bundle": "^3.4.30|^4.3.3|^5.0|^6.0", composer.lock: "symfony/framework-bundle": "~3.4|~4.0|~5.0|~6.0" composer.lock: "symfony/framework-bundle": "^5.4|^6.0", composer.lock: "symfony/framework-bundle": "^4.4|^5.3|^6.0", composer.lock: "symfony/framework-bundle": "^4.4|^5.0|^6.0", composer.lock: "symfony/framework-bundle": "<5.4", composer.lock: "name": "symfony/framework-bundle", composer.lock: "url": "https://github.com/symfony/framework-bundle.git", composer.lock: "url": "https://api.github.com/repos/symfony/framework-bundle/zipball/b79e5866a8293de00c8436836c2038ec31916ee7", composer.lock: "source": "https://github.com/symfony/framework-bundle/tree/v6.1.6" composer.lock: "symfony/framework-bundle": "<5.4", composer.lock: "symfony/framework-bundle": "^4.4 || ^5.0 || ^6.0", composer.lock: "symfony/framework-bundle": "<5.4", composer.lock: "symfony/framework-bundle": "^5.4|^6.0", composer.lock: "symfony/framework-bundle": "<5.4", composer.lock: "symfony/framework-bundle": "^5.4|^6.0", composer.lock: "symfony/framework-bundle": "<4.4", composer.lock: "symfony/framework-bundle": "^4.4 | ^5.0 | ^6.0", composer.lock: "symfony/framework-bundle": "^5.4 | ^6.0", composer.lock: "symfony/framework-bundle": "^3.4|^4.0|^5.0|^6.0", composer.lock: "symfony/framework-bundle": "^5.4|^6.0" composer.lock: "symfony/framework-bundle": "^4.4|^5.0|^6.0", composer.lock: "symfony/framework-bundle": "^5.4.7|^6.0", composer.lock: "symfony/framework-bundle": "^5.4|^6.0",