bump Cython version to 0.29.22 to avoid _PyGen_Send problems in Python 3.10

Author: jasonkena

setup.py

@@ -10,7 +10,7 @@
     'scikit-image>=0.17.2',
     'opencv-python>=4.3.0',
     'matplotlib>=3.3.0',
-    'Cython==0.29.21',
+    'Cython>=0.29.22',
     'yacs>=0.1.8',
     'h5py>=2.10.0',
     'gputil>=1.4.0',