ci: Upload raw coverage information (#1044)

For simpler debug upload rav coverage information

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

- **Chores**
- Improved CI/CD pipeline by adding a step to upload coverage reports,
enhancing visibility into code quality metrics.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

.github/workflows/base_test_workflow.yml

@@ -97,14 +97,22 @@ jobs:
             ./report-*.json
           retention-days: 7
 
-      - uses: actions/upload-artifact@v3
+      - name: Upload coverage report ${{ inputs.tox_args }}
+        uses: actions/upload-artifact@v3
         if: ${{ inputs.coverage }}
         with:
           name: coverage_report ${{ inputs.tox_args }}
           path: |
             ./htmlcov
           retention-days: 7
 
+      - name: Upload coverage raw data
+        uses: actions/upload-artifact@v3
+        with:
+          name: coverage_raw ${{ inputs.tox_args }}
+          path: ./coverage.xml
+          retention-days: 7
+
       - uses: codecov/codecov-action@v3
         if: ${{ inputs.coverage }}
         with: