PHP 8.4 deprecations

[simoheinonen]

At least

PHP Deprecated: Softonic\OAuth2\Guzzle\Middleware\ClientBuilder::build(): Implicitly marking parameter $guzzleOptions as nullable is deprecated, the explicit nullable type must be used instead in /app/vendor/softonic/guzzle-oauth2-middleware/src/ClientBuilder.php on line 14
PHP Deprecated: Softonic\OAuth2\Guzzle\Middleware\ClientBuilder::mergeOptions(): Implicitly marking parameter $options as nullable is deprecated, the explicit nullable type must be used instead in /app/vendor/softonic/guzzle-oauth2-middleware/src/ClientBuilder.php on line 79
PHP Deprecated: Softonic\OAuth2\Guzzle\Middleware\RetryOnAuthorizationError::__invoke(): Implicitly marking parameter $response as nullable is deprecated, the explicit nullable type must be used instead in /app/vendor/softonic/guzzle-oauth2-middleware/src/RetryOnAuthorizationError.php on line 22
PHP Deprecated: Softonic\OAuth2\Guzzle\Middleware\RetryOnAuthorizationError::__invoke(): Implicitly marking parameter $exception as nullable is deprecated, the explicit nullable type must be used instead in /app/vendor/softonic/guzzle-oauth2-middleware/src/RetryOnAuthorizationError.php on line 22
PHP Deprecated: Softonic\OAuth2\Guzzle\Middleware\RetryOnAuthorizationError::isUnauthorizedResponse(): Implicitly marking parameter $response as nullable is deprecated, the explicit nullable type must be used instead in /app/vendor/softonic/guzzle-oauth2-middleware/src/RetryOnAuthorizationError.php on line 35

[simoheinonen]

I guess this library still supports php 7.0 which doesn't have nullable types so would need to drop that