⬆️ Update dependency eslint-plugin-functional to v9

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
eslint-plugin-functional	7.3.0 -> 9.0.1

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Release Notes

eslint-functional/eslint-plugin-functional (eslint-plugin-functional)

v9.0.1

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Bug Fixes

• immutable-data: make ignoreMapsAndSets option actually work (#​936) (2bcc407)

v9.0.0

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Features

• immutable-data: add support for detecting map and set mutations (#​935) (0386f3a), closes #​934

BREAKING CHANGES

• immutable-data: map and set mutations will now be reported

v8.0.0

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Bug Fixes

• prefix PrivateIdentifier names with a # (#​921) (09b6474), closes #​910 #​911

BREAKING CHANGES

• when using patterns to match against PrivateIdentifiers, their names are now prefixed with a #.

v7.3.1

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