chore(deps): update dependency slug to v7

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
slug	^6.0.0 -> ^7.0.0

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Release Notes

Trott/slug

### [`v7.0.0`](https://togithub.com/Trott/slug/blob/HEAD/CHANGELOG.md#​700-httpsgithubcomTrottslugcomparev610v700-2022-08-31) [Compare Source](https://togithub.com/Trott/slug/compare/v6.1.0...v7.0.0) ##### chore - drop support for Node.js 12.x and 17.x ([#​344](https://togithub.com/Trott/slug/issues/344)) ([a109d37](https://togithub.com/Trott/slug/commit/a109d3740dc4f0776b313b7033f7de87229dcfcd)) ##### BREAKING CHANGES - Drop support for Node.js earlier than 14.x. ### [`v6.1.0`](https://togithub.com/Trott/slug/blob/HEAD/CHANGELOG.md#​610-httpsgithubcomTrottslugcomparev600v610-2022-08-31) [Compare Source](https://togithub.com/Trott/slug/compare/v6.0.0...v6.1.0) ##### Features - add fallback option ([#​342](https://togithub.com/Trott/slug/issues/342)) ([b703043](https://togithub.com/Trott/slug/commit/b703043ff369392b141fb6d44d6b554516d9fc69)), closes [#​341](https://togithub.com/Trott/slug/issues/341)

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