Guzzlehttp/guzzle ^7.0.1 not supported

[amtzm93]

Problem

I'm trying to install the LaravelOpenVidu package in a Laravel 8 project, but the minimum version required for Guzzlehttp/guzzle is ^7.0.1 and LaravelOpenVidu use ~6.0.

composer.json from Laravel 8 (link)

{
    "require": {
        "php": "^7.3",
        "fideloper/proxy": "^4.2",
        "fruitcake/laravel-cors": "^2.0",
        "guzzlehttp/guzzle": "^7.0.1",
        "laravel/framework": "^8.0",
        "laravel/tinker": "^2.0"
    },
}

composer.json from squareetlabs/LaravelOpenVidu

{
"require": {
    "php": "^7.1",
    "ext-json": "*",
    "guzzlehttp/guzzle": "~6.0",
    "illuminate/cache": "~5.5.0|~5.6.0|~5.7.0|~5.8.0|^6.0|^7.0|^8.0",
    "illuminate/config": "~5.5.0|~5.6.0|~5.7.0|~5.8.0|^6.0|^7.0|^8.0",
    "illuminate/database": "~5.5.0|~5.6.0|~5.7.0|~5.8.0|^6.0|^7.0|^8.0",
    "illuminate/events": "~5.5.0|~5.6.0|~5.7.0|~5.8.0|^6.0|^7.0|^8.0",
    "illuminate/http": "~5.5.0|~5.6.0|~5.7.0|~5.8.0|^6.0|^7.0|^8.0",
    "illuminate/routing": "~5.5.0|~5.6.0|~5.7.0|~5.8.0|^6.0|^7.0|^8.0",
    "illuminate/support": "~5.5.0|~5.6.0|~5.7.0|~5.8.0|^6.0|^7.0|^8.0",
    "illuminate/translation": "~5.5.0|~5.6.0|~5.7.0|~5.8.0|^6.0|^7.0|^8.0",
    "illuminate/validation": "~5.5.0|~5.6.0|~5.7.0|~5.8.0|^6.0|^7.0|^8.0"
  },
}