updated workflow file

Author: sunil-lakshman

.github/workflows/coverage-check.yml

@@ -23,4 +23,6 @@ jobs:
         id: coverage
         with:
           test-script: npm run test:unit
-          threshold: 95
+          threshold: 95
+          coverage-file: ./reports/contentstack-delivery/coverage/coverage-final.json
+          base-coverage-file: ./reports/contentstack-delivery/coverage/coverage-final.json