Bump cython from 3.1.4 to 3.1.5

Bumps [cython](https://github.com/cython/cython) from 3.1.4 to 3.1.5.
- [Release notes](https://github.com/cython/cython/releases)
- [Changelog](https://github.com/cython/cython/blob/master/CHANGES.rst)
- [Commits](cython/cython@3.1.4...3.1.5)

---
updated-dependencies:
- dependency-name: cython
  dependency-version: 3.1.5
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pyproject.toml

@@ -49,7 +49,7 @@ test = [
 ]
 dev = [
     'setuptools>=60',
-    'Cython==3.1.4',
+    'Cython==3.1.5',
 ]
 docs = [
     'Sphinx>=4.1.2,<7.5.0',
@@ -61,7 +61,7 @@ docs = [
 requires = [
     "setuptools>=60",
     "wheel",
-    "Cython==3.1.4",
+    "Cython==3.1.5",
 ]
 build-backend = "setuptools.build_meta"