fix: run tests

.github/workflows/ci.yml

@@ -11,9 +11,9 @@ jobs:
         with:
           python-version: '3.10'
       - name: Install dependencies
-        run: |
-          pip install -r requirements.txt
-          pip install codecov-cli
+        run: pip install -r requirements.txt
+      - name: Run tests and collect coverage
+        run: pytest --cov app
       - name: Upload coverage to Codecov
         uses: codecov/[email protected]
         env: