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/publish.yml

@@ -49,7 +49,7 @@ jobs:
     runs-on: windows-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/download-artifact@v5
+      - uses: actions/download-artifact@v6
         with:
           name: patchelf-windows
           path: dist
@@ -84,7 +84,7 @@ jobs:
           fi
           echo "DOCKER_PLATFORM=$platform" >> $GITHUB_ENV
 
-      - uses: actions/download-artifact@v5
+      - uses: actions/download-artifact@v6
         with:
           name: patchelf-tarball
           path: dist
@@ -132,7 +132,7 @@ jobs:
     if: github.event_name == 'push' && github.repository == 'NixOS/patchelf' && startsWith(github.ref, 'refs/tags/')
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/download-artifact@v5
+      - uses: actions/download-artifact@v6
         with:
           pattern: patchelf-*
           merge-multiple: true