Update ci.yml

Author: DanielRivers

.github/workflows/ci.yml

@@ -42,8 +42,8 @@ jobs:
           python -m pip install --upgrade pip
           pip install -r requirements.txt
 
-      - name: Test with unittest
-        run:  python -m unittest
+      - name: Run tests
+        run:  pytest --cov-branch --cov-report=xml
 
       - name: Upload coverage reports to Codecov
         uses: codecov/codecov-action@v5