Bump actions/download-artifact from 3.0.1 to 3.0.2

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 3.0.1 to 3.0.2.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](https://github.com/actions/download-artifact/compare/v3.0.1...v3.0.2)

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/backend_tests.yml

@@ -237,7 +237,7 @@ jobs:
           nox --version
 
       - name: Download coverage data
-        uses: actions/download-artifact@v3.0.1
+        uses: actions/download-artifact@v3.0.2
         with:
           name: coverage-data
           # this action doesn't seem to respect working-directory so include working-directory value in path