Bump react-scripts from 4.0.2 to 4.0.3

[gleekzorp]

Describe the bug
dependabot was recommending to update react-dev-tools to fix an issue with immer. This would be a quick fix as it only updates the package-lock.json. After reading I saw they have a fix for this with the latest react-scripts version 4.0.3. I recommend updating the react-scripts in the package.json instead of using the dependabot pull request.

Links to my findings:

Long explanation: facebook/create-react-app#10411
Fix: https://github.com/facebook/create-react-app/releases/tag/v4.0.3

I will be running npm install --save --save-exact react-scripts@4.0.3 to update the package-json which will also update the package-lock.json with other various package updates.