Update actions/download-artifact action to v6

Author: renovate[bot]

.github/workflows/release.yml

@@ -34,7 +34,7 @@ jobs:
       - build
     steps:
       - name: Download all the dists
-        uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
+        uses: actions/download-artifact@018cc2cf5baa6db3ef3c5f8a56943fffe632ef53 # v6.0.0
         with:
           name: python-package-distributions
           path: dist/