Bump actions/download-artifact from 5 to 7 (#116)

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 5 to 7.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v5...v7)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/release.yml

@@ -352,7 +352,7 @@ jobs:
       attestations: write
     steps:
       - name: Download build artifacts
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v7
 
       - name: Generate artifact attestation
         uses: actions/attest-build-provenance@v3
@@ -381,7 +381,7 @@ jobs:
       id-token: write
     steps:
       - name: Download build artifacts
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v7
 
       - name: Publish to PyPI
         uses: PyO3/maturin-action@v1