update worlflow

Author: reiase

.github/workflows/codecov.yml

@@ -16,7 +16,7 @@ jobs:
         python-version: '3.9'
     - name: Install requirements
       run: |
-        pip install pytest pytest-cov
+        pip install pytest pytest-cov && pip install -e .
     - name: Run tests and collect coverage
       run: pytest --cov=./ --cov-report=xml
     - name: Upload coverage reports to Codecov with GitHub Action