Bump actions/download-artifact from 6 to 7

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 6 to 7.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v6...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>

Author: dependabot[bot]

.github/workflows/build_and_test.yml

@@ -54,7 +54,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
     - name: Download all wheels
-      uses: actions/download-artifact@v6
+      uses: actions/download-artifact@v7
       with:
         path: wheelhouse
     - name: Put them all in the dist folder