Bump actions/download-artifact from 5 to 6 (#259)

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/release-pypi.yaml

@@ -55,7 +55,7 @@ jobs:
         name: Install Python
         with:
           python-version: "3.11"
-      - uses: actions/download-artifact@v5
+      - uses: actions/download-artifact@v6
         with:
           name: releases
           path: dist
@@ -83,7 +83,7 @@ jobs:
       id-token: write
 
     steps:
-      - uses: actions/download-artifact@v5
+      - uses: actions/download-artifact@v6
         with:
           name: releases
           path: dist
@@ -107,7 +107,7 @@ jobs:
       id-token: write
 
     steps:
-      - uses: actions/download-artifact@v5
+      - uses: actions/download-artifact@v6
         with:
           name: releases
           path: dist