Bump actions/download-artifact from 5 to 6 (#109)

Author: dependabot[bot]

.github/workflows/test-report.yaml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Download test report file
-      uses: actions/download-artifact@v5
+      uses: actions/download-artifact@v6
       with:
         github-token: ${{ secrets.GH_DOWNLOAD_TOKEN }}
         pattern: test-results*