Update dependency eslint-plugin-flowtype to v5.9.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
eslint-plugin-flowtype	5.8.2 -> 5.9.0

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Release Notes

gajus/eslint-plugin-flowtype

### [`v5.9.0`](https://togithub.com/gajus/eslint-plugin-flowtype/releases/v5.9.0) [Compare Source](https://togithub.com/gajus/eslint-plugin-flowtype/compare/v5.8.2...v5.9.0) ##### Features - Interface Id Match rule ([#​492](https://togithub.com/gajus/eslint-plugin-flowtype/issues/492)) ([d7abd9f](https://togithub.com/gajus/eslint-plugin-flowtype/commit/d7abd9f68d6cab5638b21c733ee4ab20a1354230))

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