[GH actions] Adding CMake 4.0 version to CI

[ErniGH]

Waiting for CMake 4.0 release (4.0.0-rc4 for now)

Summary:

• Conan seems compatible with CMake 4.0.
• 99% of failures are due to cmake_minimum_required < 3.5

  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.

• Another failure was related to --preset usage:
  cmake < 4.x

$ cmake . --preset conan-release
CMake Warning:
  Ignoring extra path from command line:

   "."

Preset CMake variables:

  CMAKE_BUILD_TYPE="Release"
  CMAKE_POLICY_DEFAULT_CMP0091="NEW"
  CMAKE_TOOLCHAIN_FILE:FILEPATH="generators/conan_toolchain.cmake"

# ............

cmake >= 4.x

$ cmake . --preset conan-release --log-level VERBOSE
CMake Warning:
  Ignoring extra path from command line:

   "."

Preset CMake variables:

  CMAKE_BUILD_TYPE="Release"
  CMAKE_POLICY_DEFAULT_CMP0091="NEW"
  CMAKE_TOOLCHAIN_FILE:FILEPATH="generators/conan_toolchain.cmake"

# ............

Then, CMake 4.x needs to add --log-level VERBOSE to show those variables.
The test that checks this is FAILED test/functional/toolchains/cmake/test_cmake_toolchain.py::test_cmake_user_presets_load[None]

[ErniGH]

add cmake--version