Update dep @artsy/palette from 5.1.15 to v5.1.16

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
@artsy/palette	dependencies	patch	5.1.15 -> 5.1.16

See full list of changes here.

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Release Notes

artsy/palette

### [`v5.1.16`](https://togithub.com/artsy/palette/blob/master/CHANGELOG.md#v5116-Tue-Jan-21-2020) [Compare Source](https://togithub.com/artsy/palette/compare/v5.1.15...v5.1.16) ##### 🐛 Bug Fix - `@artsy/palette` - Fix lazy load double download issue by updating lib [#​628](https://togithub.com/artsy/palette/pull/628) ([@​zephraph](https://togithub.com/zephraph)) ##### Authors: 1 - Justin Bennett ([@​zephraph](https://togithub.com/zephraph)) * * *

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[artsyit]

:rocket: PR was released in v1.21.17 :rocket: