Here's an update of cython to include the bugfix for a regression 
introduced in 0.29.35.

Rebuilt all reverse consumers on amd64.

ok?

Index: Makefile
===================================================================
RCS file: /cvs/ports/lang/cython/Makefile,v
diff -u -p -u -r1.65 Makefile
--- Makefile	10 Feb 2024 18:16:41 -0000	1.65
+++ Makefile	11 Feb 2024 01:05:12 -0000
@@ -1,6 +1,6 @@
 COMMENT =		optimising static compiler for Python and Cython
 
-MODPY_EGG_VERSION =	0.29.36
+MODPY_EGG_VERSION =	0.29.37
 DISTNAME =		Cython-${MODPY_EGG_VERSION}
 PKGNAME =		py-cython-${MODPY_EGG_VERSION}
 CATEGORIES =		lang
Index: distinfo
===================================================================
RCS file: /cvs/ports/lang/cython/distinfo,v
diff -u -p -u -r1.38 distinfo
--- distinfo	10 Feb 2024 18:16:41 -0000	1.38
+++ distinfo	11 Feb 2024 01:05:12 -0000
@@ -1,2 +1,2 @@
-SHA256 (Cython-0.29.36.tar.gz) = QcDP0tdU44PJ7rle/8mqSrhH0Ml0cHfd18Dctow7wB8=
-SIZE (Cython-0.29.36.tar.gz) = 2097760
+SHA256 (Cython-0.29.37.tar.gz) = +BPUpt2Ure5dT/JmGR0dlb9tQWSk+sxTVCLAIbJQTPs=
+SIZE (Cython-0.29.37.tar.gz) = 2099621