CICD: Bump actions/download-artifact from 5 to 6 (#88)

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] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/wheels.yml

@@ -166,7 +166,7 @@ jobs:
     - uses: actions/setup-python@v6
       with:
         python-version: "3.11"
-    - uses: actions/download-artifact@v5
+    - uses: actions/download-artifact@v6
       with:
         pattern: artifact-*
         merge-multiple: true
@@ -191,7 +191,7 @@ jobs:
       with:
         python-version: "3.11"
 
-    - uses: actions/download-artifact@v5
+    - uses: actions/download-artifact@v6
       with:
         pattern: artifact-*
         merge-multiple: true