build: update dependency kitsu to ~7.3.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
kitsu	dependencies	minor	~7.2.0 -> ~7.3.0

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Release Notes

wopian/kitsu

### [`v7.3.0`](https://togithub.com/wopian/kitsu/blob/master/CHANGELOG.md#​730httpsgithubcomwopiankitsucomparev722v730-2019-11-28) [Compare Source](https://togithub.com/wopian/kitsu/compare/v7.2.2...v7.3.0) ##### Chores - **release:** update documentation ([30e4418](https://togithub.com/wopian/kitsu/commit/30e4418)) ##### New Features - **kitsu:** remove unused [@​babel](https://togithub.com/babel)/runtime dependency ([8219f20](https://togithub.com/wopian/kitsu/commit/8219f20)) #### [7.2.2](https://togithub.com/wopian/kitsu/compare/v7.2.1...v7.2.2) (2019-11-25) ##### Bug Fixes - switch babel-minify to terser ([d687532](https://togithub.com/wopian/kitsu/commit/d687532)) ##### Chores - **ci:** restore size-limit for bundle outputs ([56b9e01](https://togithub.com/wopian/kitsu/commit/56b9e01)) - **release:** update documentation ([29e9743](https://togithub.com/wopian/kitsu/commit/29e9743)) - remove last traces of babel-minify ([86c232f](https://togithub.com/wopian/kitsu/commit/86c232f)) #### [7.2.1](https://togithub.com/wopian/kitsu/compare/v7.2.0...v7.2.1) (2019-11-25) ##### Bug Fixes - upgrade rollup to 1.27.5 ([d6bf0d8](https://togithub.com/wopian/kitsu/commit/d6bf0d8)) ##### Chores - **release:** update documentation ([0bebf33](https://togithub.com/wopian/kitsu/commit/0bebf33))

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