Bump clean-css from 3.4.28 to 4.1.11

[dependabot[bot]]

Bumps clean-css from 3.4.28 to 4.1.11.

Changelog

*Sourced from [clean-css's changelog](https://github.com/jakubpawlowicz/clean-css/blob/master/History.md).* > [4.1.11 / 2018-03-06](https://github.com/jakubpawlowicz/clean-css/compare/v4.1.10...v4.1.11) > ================== > > * Backports fixes to ReDOS vulnerabilities in validator code. > > [4.1.10 / 2018-03-05](https://github.com/jakubpawlowicz/clean-css/compare/v4.1.9...v4.1.10) > ================== > > * Fixed issue [#988](https://github-redirect.dependabot.com/jakubpawlowicz/clean-css/issues/988) - edge case in dropping default animation-duration. > * Fixed issue [#989](https://github-redirect.dependabot.com/jakubpawlowicz/clean-css/issues/989) - edge case in removing unused at rules. > * Fixed issue [#1001](https://github-redirect.dependabot.com/jakubpawlowicz/clean-css/issues/1001) - corrupted tokenizer state. > * Fixed issue [#1006](https://github-redirect.dependabot.com/jakubpawlowicz/clean-css/issues/1006) - edge case in handling invalid source maps. > * Fixed issue [#1008](https://github-redirect.dependabot.com/jakubpawlowicz/clean-css/issues/1008) - edge case in breaking up `font` shorthand. > > [4.1.9 / 2017-09-19](https://github.com/jakubpawlowicz/clean-css/compare/v4.1.8...v4.1.9) > ================== > > * Fixed issue [#971](https://github-redirect.dependabot.com/jakubpawlowicz/clean-css/issues/971) - edge case in removing unused at rules. > > [4.1.8 / 2017-09-02](https://github.com/jakubpawlowicz/clean-css/compare/v4.1.7...v4.1.8) > ================== > > * Fixed issue [#959](https://github-redirect.dependabot.com/jakubpawlowicz/clean-css/issues/959) - regression in shortening long hex values. > * Fixed issue [#960](https://github-redirect.dependabot.com/jakubpawlowicz/clean-css/issues/960) - better explanation of `efficiency` stat. > * Fixed issue [#965](https://github-redirect.dependabot.com/jakubpawlowicz/clean-css/issues/965) - edge case in parsing comment endings. > * Fixed issue [#966](https://github-redirect.dependabot.com/jakubpawlowicz/clean-css/issues/966) - remote `@import`s referenced from local ones. > > [4.1.7 / 2017-07-14](https://github.com/jakubpawlowicz/clean-css/compare/v4.1.6...v4.1.7) > ================== > > * Fixed issue [#957](https://github-redirect.dependabot.com/jakubpawlowicz/clean-css/issues/957) - `0%` minification of `width` property. > > [4.1.6 / 2017-07-08](https://github.com/jakubpawlowicz/clean-css/compare/v4.1.5...v4.1.6) > ================== > > * Fixed issue [#887](https://github-redirect.dependabot.com/jakubpawlowicz/clean-css/issues/887) - edge case in serializing comments. > * Fixed issue [#953](https://github-redirect.dependabot.com/jakubpawlowicz/clean-css/issues/953) - beautify breaks attribute selectors. > > [4.1.5 / 2017-06-29](https://github.com/jakubpawlowicz/clean-css/compare/v4.1.4...v4.1.5) > ================== > > * Fixed issue [#945](https://github-redirect.dependabot.com/jakubpawlowicz/clean-css/issues/945) - hex RGBA colors in IE filters. > * Fixed issue [#952](https://github-redirect.dependabot.com/jakubpawlowicz/clean-css/issues/952) - parsing `@page` according to CSS3 spec. > > [4.1.4 / 2017-06-14](https://github.com/jakubpawlowicz/clean-css/compare/v4.1.3...v4.1.4) > ================== > > * Fixed issue [#950](https://github-redirect.dependabot.com/jakubpawlowicz/clean-css/issues/950) - bug in removing unused `@font-face` rules. > > [4.1.3 / 2017-05-18](https://github.com/jakubpawlowicz/clean-css/compare/v4.1.2...v4.1.3) > ... (truncated)

Commits

- [`7812d59`](https://github.com/jakubpawlowicz/clean-css/commit/7812d591d51543c5a71de9538ef6bab87dbcc8d8) Version 4.1.11. - [`0440b4a`](https://github.com/jakubpawlowicz/clean-css/commit/0440b4acee9d84624dfb66da2956a94ebcf33519) Fixes ReDOS vulnerabilities. - [`c601ebd`](https://github.com/jakubpawlowicz/clean-css/commit/c601ebd71da6320268058087ed049ab3b13aa068) Version 4.1.10. - [`9e0a38e`](https://github.com/jakubpawlowicz/clean-css/commit/9e0a38ea3619c742403a33a8963ed2b33d5f41e6) Fixes [#1006](https://github-redirect.dependabot.com/jakubpawlowicz/clean-css/issues/1006) - handling invalid input source maps. - [`913d72c`](https://github.com/jakubpawlowicz/clean-css/commit/913d72c4a23a99a8e2de0712bc9fd589c06588eb) Fixes [#1008](https://github-redirect.dependabot.com/jakubpawlowicz/clean-css/issues/1008) - edge case in breaking up `font`. - [`bedd8a9`](https://github.com/jakubpawlowicz/clean-css/commit/bedd8a9abfa7f3d4432a49870b8f27440aa2f197) Adds [@​abarre](https://github.com/abarre) fix to [#1001](https://github-redirect.dependabot.com/jakubpawlowicz/clean-css/issues/1001) to release notes. - [`e944a2b`](https://github.com/jakubpawlowicz/clean-css/commit/e944a2bb10ecfa9e4a1e4562c8bcbc75ef410f5d) [#1001](https://github-redirect.dependabot.com/jakubpawlowicz/clean-css/issues/1001) Fix corrupted state of tokenizer ([#1010](https://github-redirect.dependabot.com/jakubpawlowicz/clean-css/issues/1010)) - [`8be4084`](https://github.com/jakubpawlowicz/clean-css/commit/8be408426a80443f79570506e4334641a2d540bf) Fixes [#989](https://github-redirect.dependabot.com/jakubpawlowicz/clean-css/issues/989) - edge case in removing unused at-rules. - [`21a5df0`](https://github.com/jakubpawlowicz/clean-css/commit/21a5df0496f4c721f2cb14cf5f42b499312efff4) Fixes [#988](https://github-redirect.dependabot.com/jakubpawlowicz/clean-css/issues/988) - edge case in dropping `animation-duration`. - [`5f6cbc6`](https://github.com/jakubpawlowicz/clean-css/commit/5f6cbc60f355f84f8f3f99786169d70164e5e3f7) Version 4.1.9. - Additional commits viewable in [compare view](https://github.com/jakubpawlowicz/clean-css/compare/v3.4.28...v4.1.11)

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[bengerman13]

FWIW - I spent more time than I should've trying to address insecure dependencies here the other day, so I think this is just the tip of the iceberg

[siennathesane]

Prolly.

[bengerman13]

👎 This doesn't build

[siennathesane]

This doesn't build

At some point we should add CI checks for this code base.

[bengerman13]

This doesn't build

At some point we should add CI checks for this code base.

yeah. I'm not super worried about fixing the vulns, since it's only used at build time, but not getting stale would be nice.

[its-a-lisa-at-work]

nudge

[siennathesane]

@its-a-lisa it's unlikely we're going to fix this anytime soon because it's going to require substantial effort to fix a build-time library, this isn't a vulnerability which is exposed to end users. This vulnerability only happens when the site is being built and not when it's deployed, so it's both low-risk and low priority.

// cc @pburkholder

[eddietejeda]

We can archive this repo. The 18F is working on re-implementing the design with USWDS 2.0

[siennathesane]

Thanks @eddietejeda, archiving.

[dependabot[bot]]

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.