x11/py-wxPython: Actually add upstream patch

x11/py-wxPython/patches/patch-wx_svg___nanosvg.pyx

@@ -0,0 +1,15 @@
+$NetBSD: patch-wx_svg___nanosvg.pyx,v 1.1 2023/11/20 12:24:39 gdt Exp $
+
+Fix build with cython 3.
+Taken from https://github.com/wxWidgets/Phoenix/pull/2441
+
+--- wx/svg/_nanosvg.pyx.orig	2023-11-19 23:51:44.405729624 +0000
++++ wx/svg/_nanosvg.pyx
+@@ -42,7 +42,6 @@ for manipulating the SVG shape info in m
+ 
+ import sys
+ 
+-cimport cython.object
+ from cpython.buffer cimport (
+     Py_buffer, PyObject_CheckBuffer, PyObject_GetBuffer, PyBUF_SIMPLE,
+     PyBuffer_Release)