Bump actions/download-artifact from 4 to 7 (#657)

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 4 to 7.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](https://github.com/actions/download-artifact/compare/v4...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] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/build.yml

@@ -440,7 +440,7 @@ jobs:
     permissions:
       id-token: write
     steps:
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v7
         with:
           name: pypi
           path: dist
@@ -461,13 +461,13 @@ jobs:
     permissions:
       packages: write
     steps:
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v7
         with:
           name: docker-amd
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v7
         with:
           name: docker-arm
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v7
         with:
           name: docker-qemu