Merge pull request #1014 from opensafely-core/dependabot/github_actions/actions/download-artifact-6

Bump actions/download-artifact from 5 to 6

Author: rebkwok

.github/workflows/main.yml

@@ -144,7 +144,7 @@ jobs:
          install-just: true
 
      - name: Download docker image
-       uses: actions/download-artifact@v5
+       uses: actions/download-artifact@v6
        with:
            name: airlock-image
            path: /tmp/image