An in-range update of clean-css is breaking the build 🚨

## The dependency [clean-css](https://github.com/jakubpawlowicz/clean-css) was updated from `4.2.1` to `4.2.2`.

🚨 [View failing branch](https://github.com/aethant/merino/compare/master...aethant:greenkeeper%2Fclean-css-4.2.2).

This version is **covered** by your **current version range** and after updating it in your project **the build failed**.

clean-css is a direct dependency of this project, and **it is very likely causing it to break**. If other packages depend on yours, this update is probably also breaking those in turn.

Status Details

- ❌ **continuous-integration/travis-ci/push:** The Travis CI build could not complete due to an error ([Details](https://travis-ci.org/aethant/merino/builds/641712239?utm_source=github_status&utm_medium=notification)).

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Commits

The new version differs by 7 commits.

• 58d80f8 Version 4.2.2.


• e79454c Adds missing changelog entries.


• e1410e4 fix(colors): convert rgba/hsla to rgb/hsl if opacity is >= 1 (#1083)


• 9b1ed5b Prevent unquoting on grid elements (#1085)


• 31379cd Fix local fonts with colors in name (#1077)


• da25f4f Prevent error if property block has no value (level 0) (#1061)


• b01dd75 Bumps web interface to version 4.2.1.

See the full diff

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