Bump fast-xml-parser and aws-amplify in /ui-react

Bumps [fast-xml-parser](https://github.com/NaturalIntelligence/fast-xml-parser) to 4.4.1 and updates ancestor dependency [aws-amplify](https://github.com/aws-amplify/amplify-js). These dependencies need to be updated together.


Updates `fast-xml-parser` from 4.2.5 to 4.4.1
- [Release notes](https://github.com/NaturalIntelligence/fast-xml-parser/releases)
- [Changelog](https://github.com/NaturalIntelligence/fast-xml-parser/blob/master/CHANGELOG.md)
- [Commits](NaturalIntelligence/fast-xml-parser@v4.2.5...v4.4.1)

Updates `aws-amplify` from 5.3.12 to 6.4.3
- [Release notes](https://github.com/aws-amplify/amplify-js/releases)
- [Commits](https://github.com/aws-amplify/amplify-js/compare/aws-amplify@5.3.12...aws-amplify@6.4.3)

---
updated-dependencies:
- dependency-name: fast-xml-parser
  dependency-type: indirect
- dependency-name: aws-amplify
  dependency-type: direct:production
...

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Author: dependabot[bot]