chore(deps): update devdependency eslint-plugin-jest to ^23.18.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
eslint-plugin-jest	devDependencies	minor	^23.17.1 -> ^23.18.0

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Release Notes

jest-community/eslint-plugin-jest

### [`v23.18.0`](https://togithub.com/jest-community/eslint-plugin-jest/blob/master/CHANGELOG.md#​23180-httpsgithubcomjest-communityeslint-plugin-jestcomparev23171v23180-2020-07-05) [Compare Source](https://togithub.com/jest-community/eslint-plugin-jest/compare/v23.17.1...v23.18.0) ##### Features - **valid-title:** support `mustMatch` & `mustNotMatch` options ([#​608](https://togithub.com/jest-community/eslint-plugin-jest/issues/608)) ([4c7207e](https://togithub.com/jest-community/eslint-plugin-jest/commit/4c7207ebbb274f7b584225ad65ffb96a4328240e)), closes [#​233](https://togithub.com/jest-community/eslint-plugin-jest/issues/233) #### [23.17.1](https://togithub.com/jest-community/eslint-plugin-jest/compare/v23.17.0...v23.17.1) (2020-06-23) ##### Bug Fixes - **lowercase-name:** ignore all top level describes when option is true ([#​614](https://togithub.com/jest-community/eslint-plugin-jest/issues/614)) ([624018a](https://togithub.com/jest-community/eslint-plugin-jest/commit/624018aa181e7c0ce87457a4f9c212c7891987a8)), closes [#​613](https://togithub.com/jest-community/eslint-plugin-jest/issues/613)

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