[BUG]: DeprecationWarning: 'onAfterSetupMiddleware' option is deprecated

[marcoandre1]

Describe the bug
I noticed that there is a quick warning when launching the app with npm start :

> react-scripts start

(node:26108) [DEP_WEBPACK_DEV_SERVER_ON_AFTER_SETUP_MIDDLEWARE] DeprecationWarning: 'onAfterSetupMiddleware' option is deprecated. Please use the 'setupMiddlewares' option.
(Use node --trace-deprecation ... to show where the warning was created)
(node:26108) [DEP_WEBPACK_DEV_SERVER_ON_BEFORE_SETUP_MIDDLEWARE] DeprecationWarning: 'onBeforeSetupMiddleware' option is deprecated. Please use the 'setupMiddlewares' option.

To Reproduce
Steps to reproduce the behavior:

1. Start local server with npm start

Expected behavior
No warnings.

Additional context
There is an issue opened on the main create-react-app repo : DeprecationWarning: 'onAfterSetupMiddleware' option is deprecated #12035. The fix is specified in pull request : fix(webpackDevServer): fix deprecation warning #11862. However, I can't make the fix without ejecting, which I don't want to do. I will keep an eye if it ever gets fixed. At the moment, it doesn't affect npm build.