because std::system_category does not translate WSAGetLastError results

The build with CMake >= 4 currently fails with:

CMake Error at CMakeLists.txt:1 (cmake_minimum_required):
  Compatibility with CMake < 3.5 has been removed from CMake.

  Update the VERSION argument <min> value.  Or, use the <min>...<max> syntax
  to tell CMake that the project requires at least <min> but has been updated
  to work with policies introduced by <max> or earlier.

  Or, add -DCMAKE_POLICY_VERSION_MINIMUM=3.5 to try configuring anyway.

we simply need to specify that the minimum version is 3.5 to fix the
build.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

CMakeLists.txt: make it compatible with CMake 4