Update dependency eslint-plugin-react to v7.21.1

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
eslint-plugin-react	devDependencies	patch	7.21.0 -> 7.21.1

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Release Notes

yannickcr/eslint-plugin-react

### [`v7.21.1`](https://togithub.com/yannickcr/eslint-plugin-react/blob/master/CHANGELOG.md#​7211---20200923) [Compare Source](https://togithub.com/yannickcr/eslint-plugin-react/compare/v7.21.0...v7.21.1) ##### Fixed - [`jsx-handler-names`]: avoid a crash when an inline prop is not a MemberExpression ([#​2803][] [@​willheslam](https://togithub.com/willheslam)) [#​2803]: https://togithub.com/yannickcr/eslint-plugin-react/issues/2803

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