feat: update CI workflow to include coverage in test run

chore: add @vitest/coverage-v8 dependency to package.json and package-lock.json

Author: alokreddy

.github/workflows/ci.yml

@@ -22,4 +22,4 @@ jobs:
         run: npm ci
 
       - name: Run tests
-        run: npm run test
+        run: npm run test -- --coverage