Bump terser and react-scripts

Bumps [terser](https://github.com/terser/terser) and [react-scripts](https://github.com/facebook/create-react-app/tree/HEAD/packages/react-scripts). These dependencies needed to be updated together.

Updates `terser` from 3.17.0 to 4.8.1
- [Release notes](https://github.com/terser/terser/releases)
- [Changelog](https://github.com/terser/terser/blob/master/CHANGELOG.md)
- [Commits](terser/terser@v3.17.0...v4.8.1)

Updates `react-scripts` from 3.0.1 to 3.4.4
- [Release notes](https://github.com/facebook/create-react-app/releases)
- [Changelog](https://github.com/facebook/create-react-app/blob/main/CHANGELOG-3.x.md)
- [Commits](https://github.com/facebook/create-react-app/commits/v3.4.4/packages/react-scripts)

---
updated-dependencies:
- dependency-name: terser
  dependency-type: indirect
- dependency-name: react-scripts
  dependency-type: direct:production
...

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Author: dependabot[bot]