Bump eslint-plugin-flowtype from 4.5.2 to 4.6.0
Bump eslint-plugin-flowtype from 4.5.2 to 4.6.0

Bumps [eslint-plugin-flowtype](https://github.com/gajus/eslint-plugin-flowtype) from 4.5.2 to 4.6.0.
- [Release notes](https://github.com/gajus/eslint-plugin-flowtype/releases)
- [Commits](https://github.com/gajus/eslint-plugin-flowtype/compare/v4.5.2...v4.6.0)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
tomkp/react-split-pane