Update dependency Cython to v3.1.6 (#2748)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

dependencies-dev

@@ -1,4 +1,4 @@
-Cython==3.1.5
+Cython==3.1.6
 Jinja2==3.1.6
 numpy==2.0.1 ; python_version <= '3.9'
 numpy==2.2.6 ; python_version == '3.10'