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](https://github.com/actions/download-artifact/compare/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>

.github/workflows/release.yml

@@ -141,7 +141,7 @@ jobs:
         hatch --version
 
     - name: Get artifact
-      uses: actions/download-artifact@v5
+      uses: actions/download-artifact@v6
       with:
         name: sdist-and-wheel
         path: ${{ github.workspace }}/dist
@@ -181,7 +181,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Get artifact
-      uses: actions/download-artifact@v5
+      uses: actions/download-artifact@v6
       with:
         name: sdist-and-wheel
         path: dist
@@ -200,7 +200,7 @@ jobs:
     if: github.event_name == 'release' && github.event.action == 'published'
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/download-artifact@v5
+    - uses: actions/download-artifact@v6
       name: Get artifact
       with:
         path: dist