ci: disable free-threaded support for wheel builds

Author: HugoMVale

.github/workflows/build-wheels.yml

@@ -47,6 +47,7 @@ jobs:
         env:
           # All cibuildwheel options are here (nothing "hidden" in pyproject.toml)
           CIBW_SKIP: "*-win32 *i686"
+          CIBW_FREE_THREADED_SUPPORT: False
           CIBW_BUILD_FRONTEND: build
           CIBW_BUILD_VERBOSITY: 3
           CIBW_TEST_REQUIRES: pytest scipy