Update dependency eslint-config-amo to v4.6.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
eslint-config-amo	4.5.0 -> 4.6.0

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Release Notes

mozilla/eslint-config-amo

### [`v4.6.0`](https://togithub.com/mozilla/eslint-config-amo/releases/4.6.0) [Compare Source](https://togithub.com/mozilla/eslint-config-amo/compare/4.5.0...4.6.0) #### dependencies - Updated: dependency `eslint-config-prettier` to v8.3.0 ([#​316](https://togithub.com/mozilla/eslint-config-amo/issues/316)) - Updated: dependency `eslint-plugin-jest` to v24.3.6 ([#​317](https://togithub.com/mozilla/eslint-config-amo/issues/317)) #### others - Updated: Lock file maintenance

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