Merge pull request #51 from cretueusebiu/dependabot/npm_and_yarn/clean-css-4.1.11

Bump clean-css from 4.1.9 to 4.1.11

Author: cretueusebiu

yarn.lock

@@ -1668,8 +1668,8 @@ class-utils@^0.3.5:
     static-extend "^0.1.1"
 
 clean-css@4.1.x:
-  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"
   dependencies:
     source-map "0.5.x"