Support CMake 4.0

Please update the `cmake_minimum_required` to something like `cmake_minimum_required(VERSION 3.5...4.0)`.

https://github.com/intel/ipmctl/blob/d2caed166c221bd652c9310eb1c65600386c1d78/CMakeLists.txt#L4

I did not do a thorough check if this needs to be patched in other places also, but feel free to ping if more discussion is needed.