Bump actions/download-artifact from 5 to 6

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 5 to 6.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v5...v6)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/python-publish.yml

@@ -59,7 +59,7 @@ jobs:
 
     steps:
       - name: Retrieve release distributions
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           name: release-dists
           path: dist/

.github/workflows/tests.yml

@@ -76,7 +76,7 @@ jobs:
           git -c user.name="github-actions[bot]" -c user.email="41898282+github-actions[bot]@users.noreply.github.com" commit --author="cibere <[email protected]>" -m "Delete old reports" --allow-empty
 
       - name: Download Artifacts
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
 
       - name: Run Scripts
         run: |