generate using cython 3.0.0b02

Author: maxbachmann

.github/workflows/releasebuild.yml

@@ -147,7 +147,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install Cython==3.0.0a10
+          pip install Cython==3.0.0b02
 
       # The cythonized files allow installation from the sdist without cython
       - name: Generate cython