unpin Cython for Python 3.13

Author: ndgrigorian

conda-recipe/meta.yaml

@@ -41,12 +41,6 @@ requirements:
         - {{ dep }}
         {% elif dep.startswith('build>=') %}
         - {{ 'python-' ~ dep }}
-        {% elif dep.startswith('cython') %}
-        {% if dep.split(';')[1] == "python_version<'3.13'" %}
-        - {{ dep.split(';')[0] }} # [py<313]
-        {% else %}
-        - {{ dep.split(';')[0] }} # [py>=313]
-        {% endif %}
         {% else %}
         - {{ dep|replace('_','-') }}
         {% endif %}

pyproject.toml

@@ -8,8 +8,7 @@ requires = [
   "scikit-build>=0.17.0",
   "ninja>=1.11.1; platform_system!='Windows'",
   "cmake>=3.29.0",
-  "cython>=3.0.10;python_version<'3.13'",
-  "cython>=3.0.10,<3.1.0;python_version>='3.13'",
+  "cython>=3.0.10",
   "numpy >=1.23",
   # WARNING: check with doc how to upgrade
   "versioneer[toml]==0.29"