⬆️👨‍💻 Update actions/download-artifact action to v6 (#228)

Author: renovate[bot]

.github/workflows/cd.yml

@@ -33,7 +33,7 @@ jobs:
       contents: read
     needs: [build-sdist, build-wheel]
     steps:
-      - uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5
+      - uses: actions/download-artifact@018cc2cf5baa6db3ef3c5f8a56943fffe632ef53 # v6.0.0
         with:
           pattern: cibw-*
           path: dist