pyproject.toml: constraint cython version

Author: naveen521kk

pyproject.toml

@@ -1,6 +1,6 @@
 [build-system]
 build-backend = "setuptools.build_meta"
-requires = ["Cython>=3.0.2", "setuptools>=59.2.0", "wheel"]
+requires = ["Cython>=3.0.2,<3.1", "setuptools>=59.2.0", "wheel"]
 
 [tool.isort]
 # from https://black.readthedocs.io/en/stable/compatible_configs.html