expose coverage files as artifact

Author: bart-vmware

.github/workflows/sonarcube.yml

@@ -82,6 +82,13 @@ jobs:
         run: dotnet test src/Steeltoe.All.sln --filter "Category=MemoryDumps" --framework net9.0 --no-build --configuration Release --collect "XPlat Code Coverage" --settings coverlet.runsettings --logger trx --results-directory ${{ github.workspace }}
 
 
+      - name: Upload coverage files
+        uses: actions/upload-artifact@v4
+        with:
+          name: CoverageOutput
+          path: '**/coverage.opencover.xml'
+
+
       - name: End SonarQube Cloud scanner
         if: ${{ !cancelled() && steps.sonar_begin.outcome == 'success' }}
         env: