chore(deps): update dependency eslint-plugin-flowtype to v6

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
eslint-plugin-flowtype	5.10.0 -> 6.1.0

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Release Notes

gajus/eslint-plugin-flowtype

### [`v6.1.0`](https://togithub.com/gajus/eslint-plugin-flowtype/releases/v6.1.0) [Compare Source](https://togithub.com/gajus/eslint-plugin-flowtype/compare/v6.0.1...v6.1.0) ##### Features - add new rule no-duplicate-type-union-intersection-members ([#​503](https://togithub.com/gajus/eslint-plugin-flowtype/issues/503)) ([1c1c009](https://togithub.com/gajus/eslint-plugin-flowtype/commit/1c1c009ba2a58b9660d43c43750396bef8d73904)) ### [`v6.0.1`](https://togithub.com/gajus/eslint-plugin-flowtype/releases/v6.0.1) [Compare Source](https://togithub.com/gajus/eslint-plugin-flowtype/compare/v6.0.0...v6.0.1) ##### Bug Fixes - force release ([0b5b3a8](https://togithub.com/gajus/eslint-plugin-flowtype/commit/0b5b3a8ca8980021f743a82f7b7a1936ca4d3555)) ### [`v6.0.0`](https://togithub.com/gajus/eslint-plugin-flowtype/releases/v6.0.0) [Compare Source](https://togithub.com/gajus/eslint-plugin-flowtype/compare/v5.10.0...v6.0.0) ##### Bug Fixes - replace should with must ([a76ebd8](https://togithub.com/gajus/eslint-plugin-flowtype/commit/a76ebd846c30035c351c16cb13fbb15dfb532cf0)) - update dependencies ([00f0b4c](https://togithub.com/gajus/eslint-plugin-flowtype/commit/00f0b4c055953bdc589ecc5e0659b9a7f4c29db6)) ##### BREAKING CHANGES - potentially breaking dependency updates

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