Bump husky from 2.2.0 to 2.4.0

[dependabot-preview[bot]]

Bumps husky from 2.2.0 to 2.4.0.

Changelog

*Sourced from [husky's changelog](https://github.com/typicode/husky/blob/master/CHANGELOG.md).* > ## 2.4.0 > > * Add `HUSKY_SKIP_HOOKS` to skip all hooks > > ## 2.3.0 > > * Make `HUSKY_DEBUG=1` effective like `HUSKY_DEBUG=true` > * Refactor script to point to `run-node/run-node` rather than `.bin/run-node`

Commits

- [`6d32edb`](https://github.com/typicode/husky/commit/6d32edb0a13e771036c7b63da108009622e6f13b) 2.4.0 - [`3fcea1c`](https://github.com/typicode/husky/commit/3fcea1c27a4bb12fdd54b2b73d6461af9bd9245f) Update docs - [`4942ec4`](https://github.com/typicode/husky/commit/4942ec4ca336b95ab9a87b77d7a2a92f1a1b9587) Move HUSKY_SKIP_HOOKS check to shell script ([#498](https://github-redirect.dependabot.com/typicode/husky/issues/498)) - [`a9f94f0`](https://github.com/typicode/husky/commit/a9f94f0ce5130b3322a06da81bfac68b791ae189) Update README.md - [`3efbb35`](https://github.com/typicode/husky/commit/3efbb3527289864c308c70931ef9b7389c00cab9) Update README.md - [`5369b97`](https://github.com/typicode/husky/commit/5369b9732aa04bcf0c5342dc6cde85f30d212cc0) Delete BACKERS.md - [`270d3f7`](https://github.com/typicode/husky/commit/270d3f7ebf07e305d8ddb118bb97ca3d547715cb) Update appveyor.yml ([#497](https://github-redirect.dependabot.com/typicode/husky/issues/497)) - [`c941acc`](https://github.com/typicode/husky/commit/c941acc9c42d501875787873077e00014f8dc2a8) Update .travis.yml - [`398aa4d`](https://github.com/typicode/husky/commit/398aa4dfcf6e017fc05eb84bce847171f62fe372) Update appveyor.yml - [`08ce5d5`](https://github.com/typicode/husky/commit/08ce5d51adee58c32e89a41e7699cdea9e22c4c4) Update appveyor.yml - Additional commits viewable in [compare view](https://github.com/typicode/husky/compare/v2.2.0...v2.4.0)

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[dependabot-preview[bot]]

Looks like husky is up-to-date now, so this is no longer needed.