Bump @storybook/react from 6.2.0-beta.5 to 6.2.0-rc.0

Bumps [@storybook/react](https://github.com/storybookjs/storybook/tree/HEAD/app/react) from 6.2.0-beta.5 to 6.2.0-rc.0.
- [Release notes](https://github.com/storybookjs/storybook/releases)
- [Changelog](https://github.com/storybookjs/storybook/blob/next/CHANGELOG.md)
- [Commits](https://github.com/storybookjs/storybook/commits/v6.2.0-rc.0/app/react)

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