Update dependency eslint-plugin-flowtype to v4.7.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
eslint-plugin-flowtype	devDependencies	minor	4.2.0 -> 4.7.0

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Release Notes

gajus/eslint-plugin-flowtype

v4.7.0

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Features

• require-exact-type detects nested objects (#​441) (463b74e)

v4.6.0

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Features

• add fixer to invalid file annotation style message (#​440) (97a230b)

v4.5.3

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Bug Fixes

• sort-keys spreads, spreads with generics, comment handling (#​439) (dccaa76)

v4.5.2

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Bug Fixes

• enforce editorconfig (fixes #​438) (70b4fee)

v4.5.1

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Bug Fixes

• make the build work in Windows (fixes #​438) (d761d3c)

v4.5.0

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Features

• support inexact object notation in delimiter-dangle rule (#​437) (3258d30)

v4.4.1

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Bug Fixes

• handle the case where superTypeParameters is undefined (9b046e4)

v4.4.0

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Features

• require-return-type always-enforce (#​436) (45ee910)

v4.3.1

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Bug Fixes

• no-dedupe with setters or getters (#​435) (da05064)

v4.3.0

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Features

• do not raise generic spacing on line break (#​430) (63815f9)

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