Bump clean-css from 4.1.9 to 4.1.11

Bumps [clean-css](https://github.com/jakubpawlowicz/clean-css) from 4.1.9 to 4.1.11.
- [Release notes](https://github.com/jakubpawlowicz/clean-css/releases)
- [Changelog](https://github.com/jakubpawlowicz/clean-css/blob/master/History.md)
- [Commits](clean-css/clean-css@v4.1.9...v4.1.11)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

yarn.lock

@@ -1624,7 +1624,7 @@ bluebird@^3.4.7:
 
 bluebird@~3.4.1:
   version "3.4.7"
-  resolved "http://registry.npmjs.org/bluebird/-/bluebird-3.4.7.tgz#f72d760be09b7f76d08ed8fae98b289a8d05fab3"
+  resolved "https://registry.npmjs.org/bluebird/-/bluebird-3.4.7.tgz#f72d760be09b7f76d08ed8fae98b289a8d05fab3"
 
 bn.js@^4.0.0, bn.js@^4.1.0, bn.js@^4.1.1, bn.js@^4.4.0:
   version "4.11.8"
@@ -1849,7 +1849,7 @@ buffer-xor@^1.0.3:
 
 buffer@^4.3.0:
   version "4.9.1"
-  resolved "http://registry.npmjs.org/buffer/-/buffer-4.9.1.tgz#6d1bb601b07a4efced97094132093027c95bc298"
+  resolved "https://registry.npmjs.org/buffer/-/buffer-4.9.1.tgz#6d1bb601b07a4efced97094132093027c95bc298"
   dependencies:
     base64-js "^1.0.2"
     ieee754 "^1.1.4"
@@ -1983,7 +1983,7 @@ [email protected], chalk@^2.1.0, chalk@^2.3.0, chalk@^2.4.1:
 
 chalk@^1.0.0, chalk@^1.1.0, chalk@^1.1.1, chalk@^1.1.3:
   version "1.1.3"
-  resolved "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz#a8115c55e4a702fe4d150abd3872822a7e09fc98"
+  resolved "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz#a8115c55e4a702fe4d150abd3872822a7e09fc98"
   dependencies:
     ansi-styles "^2.2.1"
     escape-string-regexp "^1.0.2"
@@ -2135,8 +2135,9 @@ class-utils@^0.3.5:
     static-extend "^0.1.1"
 
 [email protected]:
-  version "4.1.9"
-  resolved "https://registry.yarnpkg.com/clean-css/-/clean-css-4.1.9.tgz#35cee8ae7687a49b98034f70de00c4edd3826301"
+  version "4.1.11"
+  resolved "https://registry.yarnpkg.com/clean-css/-/clean-css-4.1.11.tgz#2ecdf145aba38f54740f26cefd0ff3e03e125d6a"
+  integrity sha1-Ls3xRaujj1R0DybO/Q/z4D4SXWo=
   dependencies:
     source-map "0.5.x"
 
@@ -5659,7 +5660,7 @@ lodash.uniq@^4.5.0:
 
 lodash@^3.6.0:
   version "3.10.1"
-  resolved "http://registry.npmjs.org/lodash/-/lodash-3.10.1.tgz#5bf45e8e49ba4189e17d482789dfd15bd140b7b6"
+  resolved "https://registry.npmjs.org/lodash/-/lodash-3.10.1.tgz#5bf45e8e49ba4189e17d482789dfd15bd140b7b6"
 
 lodash@^4.0.0, lodash@^4.17.3, lodash@^4.3.0, lodash@^4.6.1:
   version "4.17.4"
@@ -5959,7 +5960,7 @@ minimist@^1.1.3, minimist@^1.2.0, minimist@^1.2.5:
 
 minimist@~0.0.1:
   version "0.0.10"
-  resolved "http://registry.npmjs.org/minimist/-/minimist-0.0.10.tgz#de3f98543dbf96082be48ad1a0c7cda836301dcf"
+  resolved "https://registry.npmjs.org/minimist/-/minimist-0.0.10.tgz#de3f98543dbf96082be48ad1a0c7cda836301dcf"
 
 minipass@^2.6.0, minipass@^2.8.6, minipass@^2.9.0:
   version "2.9.0"
@@ -5986,7 +5987,7 @@ mixin-deep@^1.2.0:
 
 [email protected], "mkdirp@>=0.5 0", mkdirp@~0.5.0, mkdirp@~0.5.1:
   version "0.5.1"
-  resolved "http://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz#30057438eac6cf7f8c4767f38648d6697d75c903"
+  resolved "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz#30057438eac6cf7f8c4767f38648d6697d75c903"
   dependencies:
     minimist "0.0.8"
 
@@ -5999,7 +6000,7 @@ mkdirp@^0.5.0, mkdirp@^0.5.1:
 
 mobx-react@^4.1.8:
   version "4.4.3"
-  resolved "http://registry.npmjs.org/mobx-react/-/mobx-react-4.4.3.tgz#baa9ec41165ee35ae7b9df19bca10190f36f117e"
+  resolved "https://registry.npmjs.org/mobx-react/-/mobx-react-4.4.3.tgz#baa9ec41165ee35ae7b9df19bca10190f36f117e"
   dependencies:
     hoist-non-react-statics "^2.3.1"
 
@@ -8573,7 +8574,7 @@ table@^3.7.8:
 
 table@^4.0.2:
   version "4.0.3"
-  resolved "http://registry.npmjs.org/table/-/table-4.0.3.tgz#00b5e2b602f1794b9acaf9ca908a76386a7813bc"
+  resolved "https://registry.npmjs.org/table/-/table-4.0.3.tgz#00b5e2b602f1794b9acaf9ca908a76386a7813bc"
   dependencies:
     ajv "^6.0.1"
     ajv-keywords "^3.0.0"
@@ -9431,7 +9432,7 @@ yargs@^10.0.3:
 
 yargs@^4.2.0:
   version "4.8.1"
-  resolved "http://registry.npmjs.org/yargs/-/yargs-4.8.1.tgz#c0c42924ca4aaa6b0e6da1739dfb216439f9ddc0"
+  resolved "https://registry.npmjs.org/yargs/-/yargs-4.8.1.tgz#c0c42924ca4aaa6b0e6da1739dfb216439f9ddc0"
   dependencies:
     cliui "^3.2.0"
     decamelize "^1.1.1"
@@ -9468,7 +9469,7 @@ yargs@^8.0.2:
 
 yargs@~3.10.0:
   version "3.10.0"
-  resolved "http://registry.npmjs.org/yargs/-/yargs-3.10.0.tgz#f7ee7bd857dd7c1d2d38c0e74efbd681d1431fd1"
+  resolved "https://registry.npmjs.org/yargs/-/yargs-3.10.0.tgz#f7ee7bd857dd7c1d2d38c0e74efbd681d1431fd1"
   dependencies:
     camelcase "^1.0.2"
     cliui "^2.1.0"