Add Codecov for test coverage reporting - v4 uploader

Signed-off-by: saimedhi <saimedhi@amazon.com>

Author: saimedhi

.github/workflows/build-and-test.yml

@@ -46,7 +46,7 @@ jobs:
                                cd ./plugins/dashboards-flow-framework &&
                                whoami && yarn osd bootstrap && yarn build && yarn run test:jest --coverage"
       - name: Uploads coverage
-        uses: codecov/codecov-action@v2
+        uses: codecov/codecov-action@v4
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
 
@@ -101,7 +101,7 @@ jobs:
           cd OpenSearch-Dashboards/plugins/dashboards-flow-framework
           yarn run test:jest --coverage
       - name: Uploads coverage
-        uses: codecov/codecov-action@v2
+        uses: codecov/codecov-action@v4
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}