Bump actions/download-artifact from 5 to 6 (#15)

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

Author: dependabot[bot]

.github/workflows/integration-tests.yaml

@@ -136,7 +136,7 @@ jobs:
           run_id: ${{ steps.workflow-run.outputs.run-id }}
           job_id: ${{ steps.wait-for-job.outputs.job-id }}
           conclusion: ${{ steps.wait-for-job.outputs.conclusion }}
-      - uses: actions/download-artifact@v5
+      - uses: actions/download-artifact@v6
         with:
           name: build
           run-id: ${{ steps.workflow-run.outputs.run-id }}