Bump eslint-plugin-react from 7.20.0 to 7.20.4 (#14422)

Bump eslint-plugin-react from 7.20.0 to 7.20.4 (#14422)

Bumps [eslint-plugin-react](https://github.com/yannickcr/eslint-plugin-react) from 7.20.0 to 7.20.4.
- [Release notes](https://github.com/yannickcr/eslint-plugin-react/releases)
- [Changelog](https://github.com/yannickcr/eslint-plugin-react/blob/master/CHANGELOG.md)
- [Commits](https://github.com/yannickcr/eslint-plugin-react/compare/v7.20.0...v7.20.4)

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