Ako/ fix coverage reporter (binary-com#9129)

* build: update max-worker param

* build: update max worker param

* ci: remove max worker param

* ci: add a separate script to run jest on github

* build: add JEST_MAX_WORKERS as param and added a default value to it

* ci: update codecov test runner command

* Update package.json

---------

Co-authored-by: balakrishna-deriv <56330681+balakrishna-deriv@users.noreply.github.com>

.github/workflows/codecov.yml

@@ -3,6 +3,8 @@ on:
   pull_request:
     branches:
       - '**'
+  env:
+    JEST_MAX_WORKERS: 4
   push:
     branches:
       - master
@@ -21,7 +23,7 @@ jobs:
           npm install
           npm run bootstrap
           npm run build:all
-          npm run test:jest 4
+          npm run test:jest
 
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v3.1.1

package.json

@@ -93,7 +93,7 @@
         "start": "f () { lerna exec --scope=@deriv/${1:-'*'} -- npm run start ;}; f",
         "test": "f () { bash ./scripts/circleci-config.test.sh && npm run test:stylelint  && npm run test:eslint-all && npm run test:jest ;}; f",
         "test:stylelint": "stylelint \"./packages/*/src/**/*.s(a|c)ss\"",
-        "test:jest": "jest --all --maxWorkers=${1:-8}",
+        "test:jest": "jest --all --maxWorkers=${JEST_MAX_WORKERS:-'45%'}",
         "test:e2e": "cd end-to-end-test &&  npx playwright test",
         "test:e2e-dev": "cd end-to-end-test &&  npx playwright test --trace on && npx playwright show-report",
         "test:performance": "cd e2e_tests &&  jest -c ./jest.config.js --maxWorkers=2 --detectOpenHandles performance",