Update Codecov ghaction

.github/workflows/workflow.yml

@@ -72,9 +72,21 @@ jobs:
     name: codecov
     runs-on: ubuntu-latest
     steps:
-    - uses: codecov/[email protected]
-      with:
-        fail_ci_if_error: true # optional (default = false)
-        token: ${{ secrets.CODECOV_TOKEN }} # required
-        verbose: true # optional (default = false)
-        files: ./coverage1.xml,./coverage2.xml,!./cache
+      - uses: actions/checkout@v4
+      - name: Setup Python
+        uses: actions/setup-python@v4
+      - name: Generate coverage report
+        run: |
+          pip install pytest
+          pip install pytest-cov
+          pytest --cov=./ --cov-report=xml
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v4
+        with:
+          directory: ./coverage/reports/
+          fail_ci_if_error: true
+          files: ./coverage1.xml,./coverage2.xml,!./cache
+          flags: unittests
+          name: codecov-umbrella
+          token: ${{ secrets.CODECOV_TOKEN }}
+          verbose: true