chore(deps-dev): bump antd from 4.0.0-rc.4 to 4.0.0-rc.6 (#187)
chore(deps-dev): bump antd from 4.0.0-rc.4 to 4.0.0-rc.6 (#187)

Bumps [antd](https://github.com/ant-design/ant-design) from 4.0.0-rc.4 to 4.0.0-rc.6.
- [Release notes](https://github.com/ant-design/ant-design/releases)
- [Changelog](https://github.com/ant-design/ant-design/blob/master/CHANGELOG.en-US.md)
- [Commits](https://github.com/ant-design/ant-design/compare/4.0.0-rc.4...4.0.0-rc.6)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
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