Update CRA to 4.0.3

[dldereklee]

Fixes #63
facebook/create-react-app#10412 (comment)

> npm audit

=== npm audit security report ===                        

found 0 vulnerabilities

[MattRC7]

I wonder if there was a reason we had the version of CRA fixed?

I'll try to get to testing this today.

[livgust]

@dldereklee mind fixing the conflict? I assume it's just keeping your changes.

[dldereklee]

Done

[iann]

Looks good to me! Verified locally and site builds as expected.

                       === npm audit security report ===

found 0 vulnerabilities
 in 1913 scanned packages

[iann]

building as expected. LTGM

[iann]

Hello, looks like a conflict now on the package.json. Could you please fix?

[dldereklee]

@iann Should be resolved now

[iann]

Can you upgrade to npm 7+ and run another npm install? I think that would reduce the number of differences on package-lock.json and should keep the lock file version at 2.

[dldereklee]

@iann Alright regenerated it using npm 7.6.1

[iann]

Thanks!