ci: added coverage report

Author: ram-amoncar

.github/workflows/ci.yml

@@ -31,7 +31,8 @@ jobs:
     - name: Running tests & Collecting coverage
       run: npm run coverage
 
-    - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@v4.4.1
+    - name: Upload coverage reports to Codecov
+      uses: codecov/codecov-action@v5
       with:
-        token: ${{ secrets.CODECOV_TOKEN }}
+        token: ${{ secrets.CODECOV_TOKEN }}
+        slug: full-pack/string-builder