require a more recent cython version

Author: radhermit

pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
-requires = ["cython~=0.29.20", "setuptools>=62", "setuptools_scm[toml]>=7", "wheel"]
+requires = ["cython~=0.29.30", "setuptools>=62", "setuptools_scm[toml]>=7", "wheel"]
 build-backend = "setuptools.build_meta"
 
 [tool.setuptools_scm]

tox.ini

@@ -12,7 +12,7 @@ setenv =
     # run tests against in-place build for doctest and coverage support
     PYTHONPATH = {toxinidir}/src
 deps =
-    cython ~= 0.29.20
+    cython ~= 0.29.30
     pytest
     pytest-cython
     tomli ; python_version < '3.11'
@@ -28,7 +28,7 @@ commands =
 [testenv:coverage]
 deps =
     coverage
-    cython ~= 0.29.20
+    cython ~= 0.29.30
     pytest
     pytest-cython
 commands =
@@ -86,7 +86,7 @@ commands =
 
 [testenv:sdist]
 deps =
-    cython ~= 0.29.20
+    cython ~= 0.29.30
     setuptools >= 62
     setuptools_scm[toml] >= 7
 commands = python setup.py sdist