Github Actions dawidd6/action-download-artifact set workflow_conclusion (#11096)

Motivation:
Newer versions of dawidd6/action-download-artifact changed the default
workflow_conclusion from "completed" to "completed, success" which can
result in download failures if the associated job fails, which is
expected when tests fail.

Modifications:
- Explicitly set the workflow_conclusion to "completed"

Result:
Test failures which result in build failures will still download test
data and generate reports after updating
dawidd6/action-download-artifact.

.github/workflows/ci-pr-reports.yml

@@ -20,6 +20,7 @@ jobs:
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           workflow: ${{ github.event.workflow_run.workflow_id }}
+          workflow_conclusion: completed
           commit: ${{ github.event.workflow_run.head_commit.id }}
           # File location set in ci-pr.yml and must be coordinated.
           name: test-results-${{ matrix.setup }}