update sha1 to sha256, ready to release v3.9.1
update sha1 to sha256, ready to release v3.9.1

alibaba/anyproxy,alibaba/anyproxy,alibaba/anyproxy,sdgdsffdsfff/anyproxy,alexyan/anyproxy,sdgdsffdsfff/anyproxy,alexyan/anyproxy,alexyan/anyproxy,sdgdsffdsfff/anyproxy