[update]: CMake git_repository to URL

[Milerius]

For the convenience of tools such as travis lgtm

using zip instead of git repository to solve error:

LGTM related issue: https://discuss.lgtm.com/t/update-cmake-to-3-14-to-allow-fetch-content/2048/12?u=milerius

ps: you was mixing file ending on this file between CRLF and LF, github web editor automatically put it as CRLF