[MNT] [Dependabot](deps): Bump actions/download-artifact from 5 to 6 (#1985)

Bumps
[actions/download-artifact](https://github.com/actions/download-artifact)
from 5 to 6.

Author: dependabot[bot]

.github/workflows/pypi_release.yml

@@ -102,7 +102,7 @@ jobs:
       id-token: write
 
     steps:
-      - uses: actions/download-artifact@v5
+      - uses: actions/download-artifact@v6
         with:
           name: wheels
           path: wheelhouse