Update cowsay.yaml

Author: VaasuDevanS

.github/workflows/cowsay.yaml

@@ -19,10 +19,13 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install pytest
+          pip install pytest coverage
       - name: Test with Pytest
         run: |
           pytest
+      - name: Generate Report
+        run: |
+            coverage run -m pytest
       - name: Upload coverage reports to Codecov
         uses: codecov/codecov-action@v3
         env: