ciwheelbuild: disable builds for i686

NumPy does not provide wheels for i686 and they are built from source
with pip for Essentia wheels builds. However, since Numpy 1.26.0, the build
fails due to missing BLAS: numpy/numpy#24703

The simplest solution, similar to other projects, is to disable i686 builds
entirely, given that the i686 is getting too outdated and uncommon.

pyproject-tensorflow.toml

@@ -4,7 +4,7 @@ manylinux-x86_64-image = "mtgupf/essentia-builds:manylinux2014_x86_64"
 
 # Only support x86_64 for essentia-tensorflow
 build = "cp**-manylinux_x86_64"
-skip = ["pp*", "*-musllinux*"]
+skip = ["pp*", "*-musllinux*", "*i686"]
 
 environment = { PROJECT_NAME="essentia-tensorflow", ESSENTIA_PROJECT_NAME="${PROJECT_NAME}", ESSENTIA_WHEEL_SKIP_3RDPARTY=1, ESSENTIA_WHEEL_ONLY_PYTHON=1 }