Pin cython in scikit-learn patch

Author: msimacek

graalpython/lib-graalpython/patches/scikit-learn/scikit-learn-1.1.3.patch

@@ -1,3 +1,19 @@
+diff --git a/pyproject.toml b/pyproject.toml
+index 9ad9298..b0ce0fa 100644
+--- a/pyproject.toml
++++ b/pyproject.toml
+@@ -1,9 +1,9 @@
+ [build-system]
+ # Minimum requirements for the build system to execute.
+ requires = [
+-    "setuptools<60.0",
++    "setuptools",
+     "wheel",
+-    "Cython>=0.28.5",
++    "Cython>=0.28.5,<3",
+ 
+     # use oldest-supported-numpy which provides the oldest numpy version with
+     # wheels on PyPI
 diff --git a/sklearn/_build_utils/__init__.py b/sklearn/_build_utils/__init__.py
 index d8206a3..e7b7bf4 100644
 --- a/sklearn/_build_utils/__init__.py