Breaking changes in Guzzle dependency

[cozumel424]

/frostealth/yii2-aws-s3/src/handlers/uploadCommandHandlers

protected function sourceToStream($source): StreamInterface
    {
        if (is_string($source)) {
            $source = Psr7\try_fopen($source, 'r+');
        }

        return Psr7\stream_for($source);
    }

Should now be

protected function sourceToStream($source): StreamInterface
    {
        if (is_string($source)) {
            $source = Psr7\Utils::tryFopen($source, 'r+');
        }

        return Psr7\Utils::streamFor($source);
    }

There might be more functions needs replacing, but that was the one directly affecting me. There's a list of the new functions here https://github.com/guzzle/psr7/blob/4095c77b73893521ef1c84109b95f97aa35e48b8/README.md