Fix manylinux workflow to stay on Cython 0.29.x

Author: molinav

.github/workflows/basemap-for-manylinux.yml

@@ -186,7 +186,7 @@ jobs:
           export NUMPY_INCLUDE_PATH=${sitepkgdir}/numpy/core/include
           if [ "${{ matrix.python-version }}" = "3.11" ]; then
               kwds="--no-build-isolation"
-              pip install setuptools wheel "cython >= 0.29, < 3.1"
+              pip install setuptools wheel "cython >= 0.29, < 3.0"
           fi
           cd ${{ env.PKGDIR }}
           python setup.py sdist