torchtext no longer builds with CMake >=4.0

[alexreinking]

🐛 Bug

Describe the bug: The double-conversion dependency no longer builds under CMake 4.0 because it sets its minimum compatible version to 3.0. Thus, torchtext no longer builds, either.

To Reproduce:

1. Install cmake >= 4.0, perhaps via pip install cmake
2. python setup.py develop

Expected behavior: It should build.

Screenshots: Here's the exact error I see:

CMake Error at third_party/double-conversion/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.

[alexreinking]

The same is true of sentencepiece and utf8proc