chore: Fix coverage files upload by enable hidden files upload (#1186)

fix bug introduced by
actions/upload-artifact#602

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

## Summary by CodeRabbit

- **New Features**
- Introduced a new parameter to include hidden files in coverage
reports, enhancing the comprehensiveness of the analysis.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

.github/workflows/base_test_workflow.yml

@@ -105,9 +105,10 @@ jobs:
           retention-days: 7
 
       - name: Upload coverage data
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v4.4.0
         if: ${{ inputs.coverage }}
         with:
           name: cov-reports-${{ inputs.os }}-py-${{ inputs.python_version }}-${{ inputs.napari }}-${{ inputs.qt_backend }}
+          include-hidden-files: 'true'
           path: |
             ./.coverage.*