Fix submodules URLs

[r4nx]

HTTPS versions of URLs should be used instead of SSH, as if you're not a maintainer (i.e. do not have a write permission in repository), recursive cloning results with the following for all the submodules:

Cloning into 'E:/Other/Builds/open.mp/SDK/lib/cmake-conan'...
FATAL ERROR: No supported authentication methods available (server sent: publickey)
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

[CLAassistant]

All committers have signed the CLA.

[Southclaws]

This was raised last week I think, thanks for fixing this!