Enable hidden files upload in GitHub Actions

Updated the upload-artifact action to include hidden files and provide a warning if no files are found. This ensures comprehensive coverage data is uploaded without missing any important files.

Signed-off-by: Steven K <steven@pointcircle.com>

.github/workflows/main.yml

@@ -170,6 +170,8 @@ jobs:
       - name: "Upload Coverage Results for PY:${{ matrix.python-version }} DB:${{ matrix.db}} DJ:${{ matrix.django-version }}"
         uses: actions/upload-artifact@v4
         with:
+          include-hidden-files: true
+          if-no-files-found: warn
           name: coverage-${{ matrix.python-version }}-${{ matrix.db}}-${{ matrix.django-version }}
           path: .coverage
           retention-days: 1