Add some modifications to Auth0.php

Hi guys , I had to add dinamically auth0 credentials load from db.
I succeded doing following modifications to Auth0.php class (after line 30):

    public function getSdk(): \Auth0\SDK\Auth0
        if ($this->sdk === null) {
            $this->sdk = new \Auth0\SDK\Auth0([

                'strategy' => env('AUTH0_STRATEGY', 'webapp'),
                'customDomain' => env('AUTH0_CUSTOM_DOMAIN'),
                ##TENANT SPECIFIC
                'domain' => \App\Helpers\ClassAuth0Creds::get_AUTH0_KEY('AUTH0_DOMAIN'),
                'clientId' => \App\Helpers\ClassAuth0Creds::get_AUTH0_KEY('AUTH0_CLIENT_ID'),
                'redirectUri' => \App\Helpers\ClassAuth0Creds::get_AUTH0_KEY('AUTH0_REDIRECT_URI'),
                'clientSecret' => \App\Helpers\ClassAuth0Creds::get_AUTH0_KEY('AUTH0_CLIENT_SECRET'),
                ##/TENANT SPECIFIC
                'audience' => \Auth0\Laravel\Configuration::stringToArrayOrNull(env('AUTH0_AUDIENCE')),
                'scope' => \Auth0\Laravel\Configuration::stringToArrayOrNull(env('AUTH0_SCOPE')),
                'organization' => \Auth0\Laravel\Configuration::stringToArrayOrNull(env('AUTH0_ORGANIZATION')),
                'cookieSecret' => env('AUTH0_COOKIE_SECRET', env('APP_KEY')),
                'cookieExpires' => env('COOKIE_EXPIRES', 0),
                'cookieDomain' => env('AUTH0_COOKIE_DOMAIN'),
                'cookiePath' => env('AUTH0_COOKIE_PATH'),
                'cookieSecure' => \Auth0\Laravel\Configuration::stringToBoolOrNull(env('AUTH0_COOKIE_SECURE'), false),
                'routes' => [
                    'home' => env('AUTH0_ROUTE_HOME', '/'),
                    'login' => env('AUTH0_ROUTE_LOGIN', 'login')



        return $this->sdk;

This is working ok but Im doing something nasty regarding repository good practices since Im modifiing libraries inside my vendor folder.
So question is:
How can I create my own class and call it from the config files or implement another way to properly solve it? Any advice would be wellcome.